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md-icon"></span> Getting started </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../getting-started/source-code/" class="md-nav__link"> <span class="md-ellipsis"> Source code </span> </a> </li> <li class="md-nav__item"> <a href="../../getting-started/package-development/" class="md-nav__link"> <span class="md-ellipsis"> Package development </span> </a> </li> <li class="md-nav__item"> <a href="../../getting-started/instance-development/" class="md-nav__link"> <span class="md-ellipsis"> Instance development </span> </a> </li> <li class="md-nav__item"> <a href="../../getting-started/debugging/" class="md-nav__link"> <span class="md-ellipsis"> Debugging </span> </a> </li> <li class="md-nav__item"> <a href="../../getting-started/code-style/" class="md-nav__link"> <span class="md-ellipsis"> Coding style </span> </a> </li> <li class="md-nav__item"> <a href="../../getting-started/virtualenvs/" class="md-nav__link"> <span class="md-ellipsis"> Virtual 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class="md-ellipsis"> Accessibility (a11y) </span> </a> </li> <li class="md-nav__item"> <a href="../../best-practices/commits/" class="md-nav__link"> <span class="md-ellipsis"> Commits, PRs & reviews </span> </a> </li> <li class="md-nav__item"> <a href="../../best-practices/css-js/" class="md-nav__link"> <span class="md-ellipsis"> CSS/JavaScript </span> </a> </li> <li class="md-nav__item"> <a href="../../best-practices/react/" class="md-nav__link"> <span class="md-ellipsis"> React </span> </a> </li> <li class="md-nav__item"> <a href="../../best-practices/ui/" class="md-nav__link"> <span class="md-ellipsis"> User interface </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5_4" > <label class="md-nav__link" for="__nav_5_4" id="__nav_5_4_label" tabindex="0"> <span class="md-ellipsis"> Topic guides </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="2" aria-labelledby="__nav_5_4_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_5_4"> <span class="md-nav__icon md-icon"></span> Topic guides </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../topics/resource/" class="md-nav__link"> <span class="md-ellipsis"> Building resources </span> </a> </li> <li class="md-nav__item"> <a href="../../topics/service/" class="md-nav__link"> <span class="md-ellipsis"> Building services </span> </a> </li> <li class="md-nav__item"> <a href="../../topics/serializers/" class="md-nav__link"> <span class="md-ellipsis"> Building serializers </span> </a> </li> <li class="md-nav__item"> <a href="../../topics/uow/" class="md-nav__link"> <span class="md-ellipsis"> Grouping atomic operations </span> </a> </li> <li class="md-nav__item"> <a href="../../topics/validation/" class="md-nav__link"> <span class="md-ellipsis"> Sanitize input data </span> </a> </li> <li class="md-nav__item"> <a 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class="md-nav__item"> <a href="../../howtos/custom_fields/" class="md-nav__link"> <span class="md-ellipsis"> Create a new custom field </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/custom_code/" class="md-nav__link"> <span class="md-ellipsis"> Create custom code and views </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/add_javascript/" class="md-nav__link"> <span class="md-ellipsis"> Add JavaScript </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/override_components/" class="md-nav__link"> <span class="md-ellipsis"> Override UI React components </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/search_terms_migration/" class="md-nav__link"> <span class="md-ellipsis"> Create search terms mappings </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/alembic/" class="md-nav__link"> <span class="md-ellipsis"> Create a database migration </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/security-fix/" class="md-nav__link"> <span class="md-ellipsis"> Fix a vulnerability </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/dev_email/" class="md-nav__link"> <span class="md-ellipsis"> Test emails locally </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/route_migration/" class="md-nav__link"> <span class="md-ellipsis"> Migrate legacy routes </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/backup_search_indices/" class="md-nav__link"> <span class="md-ellipsis"> Back up search indices </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/restrict_access/" class="md-nav__link"> <span class="md-ellipsis"> Restrict access to pages </span> </a> </li> <li class="md-nav__item"> <a href="../../howtos/notifications/" class="md-nav__link"> <span class="md-ellipsis"> Create and configure notifications </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--active md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5_6" checked> <label class="md-nav__link" for="__nav_5_6" id="__nav_5_6_label" tabindex="0"> <span class="md-ellipsis"> Architecture </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="2" aria-labelledby="__nav_5_6_label" aria-expanded="true"> <label class="md-nav__title" for="__nav_5_6"> <span class="md-nav__icon md-icon"></span> Architecture </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../" class="md-nav__link"> <span class="md-ellipsis"> Introduction </span> </a> </li> <li class="md-nav__item"> <a href="../infrastructure/" class="md-nav__link"> <span class="md-ellipsis"> Infrastructure </span> </a> </li> <li class="md-nav__item"> <a href="../software/" class="md-nav__link"> <span class="md-ellipsis"> Software </span> </a> </li> <li class="md-nav__item"> <a href="../runtime/" class="md-nav__link"> <span class="md-ellipsis"> Runtime </span> </a> </li> <li class="md-nav__item"> <a href="../requests/" class="md-nav__link"> <span class="md-ellipsis"> Requests </span> </a> </li> <li class="md-nav__item"> <a href="../communities/" class="md-nav__link"> <span class="md-ellipsis"> Communities </span> </a> </li> <li class="md-nav__item md-nav__item--active"> <input class="md-nav__toggle md-toggle" type="checkbox" id="__toc"> <label class="md-nav__link md-nav__link--active" for="__toc"> <span class="md-ellipsis"> Records </span> <span class="md-nav__icon md-icon"></span> </label> <a href="./" class="md-nav__link md-nav__link--active"> <span class="md-ellipsis"> Records </span> </a> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#purpose" class="md-nav__link"> <span class="md-ellipsis"> Purpose </span> </a> </li> <li class="md-nav__item"> <a href="#data-model" class="md-nav__link"> <span class="md-ellipsis"> Data model </span> </a> <nav class="md-nav" aria-label="Data model"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#parent-record" class="md-nav__link"> <span class="md-ellipsis"> Parent record </span> </a> </li> <li class="md-nav__item"> <a href="#record-version" class="md-nav__link"> <span class="md-ellipsis"> Record (version) </span> </a> </li> <li class="md-nav__item"> <a href="#draft" class="md-nav__link"> <span class="md-ellipsis"> Draft </span> </a> </li> <li class="md-nav__item"> <a href="#record-version-revision" class="md-nav__link"> <span class="md-ellipsis"> Record (version) revision </span> </a> </li> <li class="md-nav__item"> <a href="#version-state" class="md-nav__link"> <span class="md-ellipsis"> Version state </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#files" class="md-nav__link"> <span class="md-ellipsis"> Files </span> </a> </li> <li class="md-nav__item"> <a href="#community-relations" class="md-nav__link"> <span class="md-ellipsis"> Community relations </span> </a> <nav class="md-nav" aria-label="Community relations"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#relationship" class="md-nav__link"> <span class="md-ellipsis"> Relationship </span> </a> </li> <li class="md-nav__item"> <a href="#record-versions" class="md-nav__link"> <span class="md-ellipsis"> Record versions </span> </a> </li> <li class="md-nav__item"> <a href="#multiple-communities" class="md-nav__link"> <span class="md-ellipsis"> Multiple communities </span> </a> </li> <li class="md-nav__item"> <a href="#default-record-branding" class="md-nav__link"> <span class="md-ellipsis"> Default record branding </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#reviews" class="md-nav__link"> <span class="md-ellipsis"> Reviews </span> </a> <nav class="md-nav" aria-label="Reviews"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#record-states" class="md-nav__link"> <span class="md-ellipsis"> Record states </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="../event_handling/" class="md-nav__link"> <span class="md-ellipsis"> Event handling </span> </a> </li> <li class="md-nav__item"> <a href="../notifications/" class="md-nav__link"> <span class="md-ellipsis"> Notifications </span> </a> </li> <li class="md-nav__item"> <a href="../reading/" class="md-nav__link"> <span class="md-ellipsis"> Recommended reading </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5_7" > <label class="md-nav__link" for="__nav_5_7" id="__nav_5_7_label" tabindex="0"> <span class="md-ellipsis"> Concepts </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="2" aria-labelledby="__nav_5_7_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_5_7"> <span class="md-nav__icon md-icon"></span> Concepts </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../concepts/concurrency-control/" class="md-nav__link"> <span class="md-ellipsis"> Optimistic concurrency control </span> </a> </li> <li class="md-nav__item"> <a href="../../concepts/transactions/" class="md-nav__link"> <span class="md-ellipsis"> Database transaction management </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="../../../deploy/" class="md-nav__link"> <span class="md-ellipsis"> Deploy </span> </a> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" > <label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0"> <span class="md-ellipsis"> Reference </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_7"> <span class="md-nav__icon md-icon"></span> Reference </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../reference/" class="md-nav__link"> <span class="md-ellipsis"> Overview </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/cli/" class="md-nav__link"> <span class="md-ellipsis"> CLI </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/configuration/" class="md-nav__link"> <span class="md-ellipsis"> Configuration </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/metadata/" class="md-nav__link"> <span class="md-ellipsis"> Metadata </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/metadata/optional_metadata/" class="md-nav__link"> <span class="md-ellipsis"> Optional metadata </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/oai_pmh/" class="md-nav__link"> <span class="md-ellipsis"> OAI-PMH </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/export_formats/" class="md-nav__link"> <span class="md-ellipsis"> Export formats </span> </a> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7_8" > <label class="md-nav__link" for="__nav_7_8" id="__nav_7_8_label" tabindex="0"> <span class="md-ellipsis"> REST API </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="2" aria-labelledby="__nav_7_8_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_7_8"> <span class="md-nav__icon md-icon"></span> REST API </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../reference/rest_api_index/" class="md-nav__link"> <span class="md-ellipsis"> Overview </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_quickstart/" class="md-nav__link"> <span class="md-ellipsis"> Quickstart </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_communities/" class="md-nav__link"> <span class="md-ellipsis"> Communities </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_drafts_records/" class="md-nav__link"> <span class="md-ellipsis"> Drafts and Records </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_groups/" class="md-nav__link"> <span class="md-ellipsis"> Groups </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_members/" class="md-nav__link"> <span class="md-ellipsis"> Members </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_requests/" class="md-nav__link"> <span class="md-ellipsis"> Requests </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_users/" class="md-nav__link"> <span class="md-ellipsis"> Users </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_reviews/" class="md-nav__link"> <span class="md-ellipsis"> Reviews </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_vocabularies/" class="md-nav__link"> <span class="md-ellipsis"> Vocabularies </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_names/" class="md-nav__link"> <span class="md-ellipsis"> Names </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_funders/" class="md-nav__link"> <span class="md-ellipsis"> Funders </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_awards/" class="md-nav__link"> <span class="md-ellipsis"> Awards </span> </a> </li> <li class="md-nav__item"> <a href="../../../reference/rest_api_oaipmh_sets/" class="md-nav__link"> <span class="md-ellipsis"> OAI-PMH Sets </span> </a> </li> <li class="md-nav__item"> <a 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class="md-nav__link"> <span class="md-ellipsis"> Notifications </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8" > <label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0"> <span class="md-ellipsis"> Releases </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_8_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8"> <span class="md-nav__icon md-icon"></span> Releases </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/" class="md-nav__link"> <span class="md-ellipsis"> Overview </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/maintenance-policy/" class="md-nav__link"> <span class="md-ellipsis"> Maintenance policy </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/upgrade-policy/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade policy </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/security-policy/" class="md-nav__link"> <span class="md-ellipsis"> Security policy </span> </a> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_5" > <label class="md-nav__link" for="__nav_8_5" id="__nav_8_5_label" tabindex="0"> <span class="md-ellipsis"> Version v12.0 LTS </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="2" aria-labelledby="__nav_8_5_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_5"> <span class="md-nav__icon md-icon"></span> Version v12.0 LTS </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v12/version-v12.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v12.0 </span> </a> </li> <li class="md-nav__item"> <a 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href="../../../releases/v10/upgrade-v10.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v9 to v10 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/migrate-docker-images/" class="md-nav__link"> <span class="md-ellipsis"> Migrate Docker images </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_2" > <label class="md-nav__link" for="__nav_8_8_2" id="__nav_8_8_2_label" tabindex="0"> <span class="md-ellipsis"> Version v8.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_2_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_2"> <span class="md-nav__icon md-icon"></span> Version v8.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v8/version-v8.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v8.0 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v8/upgrade-v8.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v7 to v8 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_3" > <label class="md-nav__link" for="__nav_8_8_3" id="__nav_8_8_3_label" tabindex="0"> <span class="md-ellipsis"> Version v7.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_3_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_3"> <span class="md-nav__icon md-icon"></span> Version v7.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v7/version-v7.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v7.0 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v7/upgrade-v7.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v6 to v7 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_4" > <label class="md-nav__link" for="__nav_8_8_4" id="__nav_8_8_4_label" tabindex="0"> <span class="md-ellipsis"> Version v6.0.5 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_4_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_4"> <span class="md-nav__icon md-icon"></span> Version v6.0.5 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v6/version-v6.0.5/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v6.0.5 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v6/upgrade-v6.0.5/" class="md-nav__link"> <span class="md-ellipsis"> 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href="../../../releases/v5/version-v5.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v5.0 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_6" > <label class="md-nav__link" for="__nav_8_8_6" id="__nav_8_8_6_label" tabindex="0"> <span class="md-ellipsis"> Version v4.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_6_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_6"> <span class="md-nav__icon md-icon"></span> Version v4.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v4/version-v4.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v4.0 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v4/upgrade-v4.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v3 to v4 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_7" > <label class="md-nav__link" for="__nav_8_8_7" id="__nav_8_8_7_label" tabindex="0"> <span class="md-ellipsis"> Version v3.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_7_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_7"> <span class="md-nav__icon md-icon"></span> Version v3.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v3/version-v3.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v3.0 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v3/upgrade-v3.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v2 to v3 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_8" > <label class="md-nav__link" for="__nav_8_8_8" id="__nav_8_8_8_label" tabindex="0"> <span class="md-ellipsis"> Version v2.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_8_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_8"> <span class="md-nav__icon md-icon"></span> Version v2.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v2/version-v2.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v2.0 </span> </a> </li> <li class="md-nav__item"> <a href="../../../releases/v2/upgrade-v2.0/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade from v1 to v2 </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8_8_9" > <label class="md-nav__link" for="__nav_8_8_9" id="__nav_8_8_9_label" tabindex="0"> <span class="md-ellipsis"> Version v1.0 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="3" aria-labelledby="__nav_8_8_9_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_8_8_9"> <span class="md-nav__icon md-icon"></span> Version v1.0 </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../releases/v1/version-v1.0.0/" class="md-nav__link"> <span class="md-ellipsis"> Release Notes v1.0 </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_9" > <label class="md-nav__link" for="__nav_9" id="__nav_9_label" tabindex="0"> <span class="md-ellipsis"> Maintainers </span> <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_9_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_9"> <span class="md-nav__icon md-icon"></span> Maintainers </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../../../maintenance/" class="md-nav__link"> <span class="md-ellipsis"> Overview </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/newcomers/" class="md-nav__link"> <span class="md-ellipsis"> Newcomers </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/board-workflow/" class="md-nav__link"> <span class="md-ellipsis"> Sprintboard workflow </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/pr-community-board/" class="md-nav__link"> <span class="md-ellipsis"> Community PR board </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/release-management/" class="md-nav__link"> <span class="md-ellipsis"> Release management </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/modules/" class="md-nav__link"> <span class="md-ellipsis"> Modules on GitHub </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/branch-management/" class="md-nav__link"> <span class="md-ellipsis"> Branch management </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/demosite/" class="md-nav__link"> <span class="md-ellipsis"> Demo site & docs </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/docker-images/" class="md-nav__link"> <span class="md-ellipsis"> Docker images </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/rfcs/" class="md-nav__link"> <span class="md-ellipsis"> RFCs </span> </a> </li> <li class="md-nav__item"> <a href="../../../maintenance/documentation/" class="md-nav__link"> <span class="md-ellipsis"> Writing documentation </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input 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href="../../../contribute/copyright-policy/" class="md-nav__link"> <span class="md-ellipsis"> Copyright policy </span> </a> </li> <li class="md-nav__item"> <a href="../../../contribute/roadmap/" class="md-nav__link"> <span class="md-ellipsis"> Roadmap </span> </a> </li> <li class="md-nav__item"> <a href="../../../contribute/translators-guide/" class="md-nav__link"> <span class="md-ellipsis"> Translators guide </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" > <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#purpose" class="md-nav__link"> <span class="md-ellipsis"> Purpose </span> </a> </li> <li class="md-nav__item"> <a href="#data-model" class="md-nav__link"> <span class="md-ellipsis"> Data model </span> </a> <nav class="md-nav" aria-label="Data model"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#parent-record" class="md-nav__link"> <span class="md-ellipsis"> Parent record </span> </a> </li> <li class="md-nav__item"> <a href="#record-version" class="md-nav__link"> <span class="md-ellipsis"> Record (version) </span> </a> </li> <li class="md-nav__item"> <a href="#draft" class="md-nav__link"> <span class="md-ellipsis"> Draft </span> </a> </li> <li class="md-nav__item"> <a href="#record-version-revision" class="md-nav__link"> <span class="md-ellipsis"> Record (version) revision </span> </a> </li> <li class="md-nav__item"> <a href="#version-state" class="md-nav__link"> <span class="md-ellipsis"> Version state </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#files" class="md-nav__link"> <span class="md-ellipsis"> Files </span> </a> </li> <li class="md-nav__item"> <a href="#community-relations" class="md-nav__link"> <span class="md-ellipsis"> Community relations </span> </a> <nav class="md-nav" aria-label="Community relations"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#relationship" class="md-nav__link"> <span class="md-ellipsis"> Relationship </span> </a> </li> <li class="md-nav__item"> <a href="#record-versions" class="md-nav__link"> <span class="md-ellipsis"> Record versions </span> </a> </li> <li class="md-nav__item"> <a href="#multiple-communities" class="md-nav__link"> <span class="md-ellipsis"> Multiple communities </span> </a> </li> <li class="md-nav__item"> <a href="#default-record-branding" class="md-nav__link"> <span class="md-ellipsis"> Default record branding </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#reviews" class="md-nav__link"> <span class="md-ellipsis"> Reviews </span> </a> <nav class="md-nav" aria-label="Reviews"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#record-states" class="md-nav__link"> <span class="md-ellipsis"> Record states </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset"> <h1 id="records">Records<a class="headerlink" href="#records" title="Permanent link">¶</a></h1> <p><strong>Intended audience</strong></p> <p>This guide is intended for maintainers and developers of InvenioRDM itself.</p> <p><strong>Scope</strong></p> <p>The guide provides a high-level architectural overview of the bibliographic records for InvenioRDM.</p> <h2 id="purpose">Purpose<a class="headerlink" href="#purpose" title="Permanent link">¶</a></h2> <p>The record data model is the one of the most important models in the architecture as it is used to store bibliographic metadata for the primary resources (articles, datasets, presentations, videos, ...) we host in our repositories.</p> <h2 id="data-model">Data model<a class="headerlink" href="#data-model" title="Permanent link">¶</a></h2> <p>The record data model is used to describe <strong>a resource</strong>. Examples of resources include journal articles, datasets, posters, videos, images, software and more. Some properties of resources:</p> <ul> <li>A resource may exist in one or more versions.</li> <li>A resource version has its own persistent identifiers and bibliographic metadata (e.g. title, publication date, or creator list may be different between versions).</li> <li>All versions of a resource should be accessible and editable.</li> </ul> <p>The diagram below depicts the core of the record data model.</p> <p><img alt="Record entity model." src="../../img/record-entities.svg" /></p> <ul> <li><strong>Parent record</strong>: An entity representing the resource and all its versions. Properties common to all versions of a resource are stored on the parent record.</li> <li><strong>Record (version)</strong>: A record holds the metadata for a single version of a resource.</li> <li><strong>Draft</strong>: A draft is a temporary record used for supporting e.g. long running editing sessions that allow users to save their partial changes.</li> <li><strong>Record (version) revision</strong>: A record (version) revision is used to track all changes to a record version over time.</li> <li><strong>Version state</strong>: The version state is used to track which record and draft is the latest version.</li> </ul> <div class="admonition tip"> <p class="admonition-title">Version vs revision</p> <p>The terminology version and revision can be somewhat confusing at first. A revision represents <em>a change</em> to a single version of a resource (main purpose is tracking changes). A record version represents a version of a resource and is often associated with changed files and metadata.</p> <p>We have added <code>(version)</code> above to make it clear the relationship between revision and version.</p> </div> <h3 id="parent-record">Parent record<a class="headerlink" href="#parent-record" title="Permanent link">¶</a></h3> <p>A parent record stores all properties that are common for all record versions. This includes:</p> <ul> <li>Access information:<ul> <li>Ownership</li> <li>Grants</li> <li>Secret links</li> </ul> </li> <li>Community relations</li> <li>Review</li> </ul> <h3 id="record-version">Record (version)<a class="headerlink" href="#record-version" title="Permanent link">¶</a></h3> <p>A record stores bibliographic and administrative metadata for a single version of the resource. The record is what is accessible through search and record landing pages, and thus we also use the term that the record is <strong>published</strong>.</p> <h3 id="draft">Draft<a class="headerlink" href="#draft" title="Permanent link">¶</a></h3> <p>A draft is a temporary version of a record used to gather all related objects and save partial changes prior to being published.</p> <p>There's three different types of drafts:</p> <ul> <li><strong>New draft</strong>: The initial draft when no record versions have been published.</li> <li><strong>Edit draft</strong>: A draft of a published record version (used when editing an already published record)</li> <li><strong>Next draft</strong>: A draft without a published record version that is not the initial draft.</li> </ul> <p>These three different states are important because a new version of a record can be created at the same time as multiple older versions are being edited.</p> <p>An important property of a draft is that they are temporary. Thus, they get removed when they are either published or deleted/discarded.</p> <h3 id="record-version-revision">Record (version) revision<a class="headerlink" href="#record-version-revision" title="Permanent link">¶</a></h3> <p>Every time a record is created or updated, a copy of the record is written as a <em>record revision</em>. The revisions are tracked per record version and only when the corresponding version draft is published. This ensures that only published changes are tracked.</p> <h3 id="version-state">Version state<a class="headerlink" href="#version-state" title="Permanent link">¶</a></h3> <p>The version state holds the following attributes:</p> <ul> <li>parent record</li> <li>latest draft</li> <li>latest index</li> <li>next draft</li> </ul> <p>The version state is used to keep track of what is considered the latest record version. Technically the parent-record relationship is modelled as tree with unordered child nodes. This means there is <strong>no order</strong> on record versions.</p> <p>One record version is designated as the latest version tracked by this state so that it's possible to show only the latest version of a record. It also keeps track of which is the latest draft/next draft if they exist.</p> <p>Lastly, an integer index is incremented every time a new record version is created.</p> <p>The reason that we do not define an order on record versions is because multiple different orders may be relevant. A version history may not necessarily be linear, so it can make sense to order by version number, publication date or order in which the record version was created.</p> <h2 id="files">Files<a class="headerlink" href="#files" title="Permanent link">¶</a></h2> <p>A single version of a resource may have one or more files associated. The diagram below depicts how files are modelled:</p> <p><img alt="Model of files for record." src="../../img/record-files.svg" /></p> <ul> <li><strong>Bucket</strong>: A record and draft each have an associated bucket. A bucket can be thought of as a folder in a directory structure. The record and draft each have their own bucket, so it's clear which files belong to a published record and which have not yet been published.</li> <li><strong>File record/file draft</strong>: A file record/draft exists for every logical file and stores metadata about the file. It can be both technical metadata such as file size, checksum, and/or MIME type, but it can also store metadata associated with the file such as image width/height, scientific metadata etc.</li> <li><strong>Object version</strong>: An object version represents an object inside a bucket, and allows for versioning of the file inside the bucket. It's a logical representation of a file.</li> <li><strong>File instance</strong>: A file instance represents a physical file. Multiple object versions may link to the same file instance. This enables deduplication and thereby supports optimizing disk storage usage.</li> </ul> <h2 id="community-relations">Community relations<a class="headerlink" href="#community-relations" title="Permanent link">¶</a></h2> <p>A parent record can be part of one or more communities. Being part of community means that the community has ownership of the parent record.</p> <h3 id="relationship">Relationship<a class="headerlink" href="#relationship" title="Permanent link">¶</a></h3> <p>The relationship between communities and the parent records are defined using the following many-to-many relation:</p> <ul> <li>Community</li> <li>Parent record</li> <li>Request</li> </ul> <p>The request property is used to link to a request that documents how a record was added to the community. This is not meant for audit logging purposes, but as help to curators of the community.</p> <h3 id="record-versions">Record versions<a class="headerlink" href="#record-versions" title="Permanent link">¶</a></h3> <p>Record ownership is defined on the parent record and it's a parent record that's a member of a community, hence all versions of a record are owned by a community.</p> <h3 id="multiple-communities">Multiple communities<a class="headerlink" href="#multiple-communities" title="Permanent link">¶</a></h3> <p>A parent record can be owned by one or more users and/or one or more communities. This also means that everything that an uploader can do as owner, the community owners can also do with the record. E.g. a community owner could transfer/remove ownership of the record to another entity.</p> <h3 id="default-record-branding">Default record branding<a class="headerlink" href="#default-record-branding" title="Permanent link">¶</a></h3> <p>A record owned by one or more communities may optionally define with which community the record is branded with by default. This is a property on the parent record.</p> <p>The property only defines the <strong>default</strong> branding when a record <strong>is part of multiple communities</strong> and in cases were we cannot automatically decide a community branding. Examples where we cannot determine a community header automatically includes:</p> <ul> <li>A record landing page is accessed through a global search</li> <li>A record landing page is accessed through the DOI.</li> </ul> <p>Note, the default branding property is largely a property that an instance can decide or not to use during rendering of a landing page.</p> <h2 id="reviews">Reviews<a class="headerlink" href="#reviews" title="Permanent link">¶</a></h2> <p>A new draft <em>can</em> have an associated review. Edit drafts and next drafts <em>cannot</em> have an associated review.</p> <p>A review is a relation to a request. Multiple request types are supported (i.e. multiple types of reviews), but each request type must be explicitly allowed to be used as</p> <h3 id="record-states">Record states<a class="headerlink" href="#record-states" title="Permanent link">¶</a></h3> <p>The request itself follows the documented request states and transitions as documented under <a href="../requests/#statuses">requests</a>.</p> <p>The draft goes through its own states as shown below:</p> <p><img alt="Draft review state diagram" src="../../img/review-states.svg" /></p> <p>The initial draft can be one of the following states:</p> <ul> <li>Draft: The draft is yet to be published.</li> <li>Draft with review: The draft is yet to be submitted for review</li> <li>In review: The draft is in review.</li> <li>Review declined: The review was declined.</li> <li>Review expired: The review expired by the system.</li> <li>Published: A record has been created for the draft.</li> </ul> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> </main> <footer class="md-footer"> <nav class="md-footer__inner md-grid" aria-label="Footer" > <a href="../communities/" class="md-footer__link md-footer__link--prev" aria-label="Previous: Communities"> <div class="md-footer__button md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg> </div> <div class="md-footer__title"> <span class="md-footer__direction"> Previous </span> <div class="md-ellipsis"> Communities </div> </div> </a> <a href="../event_handling/" class="md-footer__link md-footer__link--next" aria-label="Next: Event handling"> <div class="md-footer__title"> <span class="md-footer__direction"> Next </span> <div class="md-ellipsis"> Event handling </div> </div> <div class="md-footer__button md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11z"/></svg> </div> </a> </nav> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class="md-copyright"> <div class="md-copyright__highlight"> Copyright © 2019-2024 CERN, Northwestern University and contributors. </div> Made with <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener"> Material for MkDocs </a> </div> <div class="md-social"> <a href="https://github.com/inveniosoftware" target="_blank" rel="noopener" title="github.com" class="md-social__link"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6m-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3m44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9M244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8M97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1m-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7m32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1m-11.4-14.7c-1.6 1-1.6 3.6 0 5.9s4.3 3.3 5.6 2.3c1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2"/></svg> </a> </div> </div> </div> </footer> </div> <div class="md-dialog" data-md-component="dialog"> <div class="md-dialog__inner md-typeset"></div> </div> <script id="__config" type="application/json">{"base": "../../..", "features": ["navigation.tabs", "navigation.footer", "content.code.copy"], "search": "../../../assets/javascripts/workers/search.6ce7567c.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}}</script> <script src="../../../assets/javascripts/bundle.525ec568.min.js"></script> </body> </html>

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