{"apiVersion":"2.1.0","data":{"description":"<p>The Data Documentaion Initiative website's list of tools to implement the DDI standard.</p>","locations":[{"type":"website","url":"http://www.ddialliance.org/resources/tools"}],"mscid":"msc:t22","relatedEntities":[{"data":{"description":"<p>A widely used, international standard for describing data from the social, behavioral, and economic sciences. Two versions of the standard are currently maintained in parallel:</p><ul><li>DDI Codebook (or DDI version 2) is the simpler of the two, and intended for documenting simple survey data for exchange or archiving. Version 2.5 was released in January 2012.</li><li>DDI Lifecycle (or DDI versions 3 and 4) are richer and may be used to document datasets at each stage of their lifecycle from conceptualization through to publication and reuse. It is modular and extensible. Version 3.3 was published in April 2020. A beta for DDI 4 was released in 2025.</li></ul><p>Both versions 2 and 3 are XML-based and are defined using XML Schemas. Version 4 supports XML, RDF, and JSON representations. They were developed and are maintained by the DDI Alliance.</p>","keywords":["http://vocabularies.unesco.org/thesaurus/concept425","http://rdamsc.bath.ac.uk/thesaurus/subdomain625","http://vocabularies.unesco.org/thesaurus/concept11757","http://vocabularies.unesco.org/thesaurus/concept302","http://vocabularies.unesco.org/thesaurus/concept6991","http://vocabularies.unesco.org/thesaurus/concept442","http://vocabularies.unesco.org/thesaurus/concept546","http://vocabularies.unesco.org/thesaurus/concept15289","http://vocabularies.unesco.org/thesaurus/concept413","http://vocabularies.unesco.org/thesaurus/concept382","http://vocabularies.unesco.org/thesaurus/concept119"],"locations":[{"type":"document","url":"http://www.ddialliance.org/Specification/"},{"type":"website","url":"http://www.ddialliance.org/"}],"mscid":"msc:m13","relatedEntities":[{"id":"msc:m50","role":"child scheme"},{"id":"msc:m63","role":"child scheme"},{"id":"msc:c8","role":"input to mapping"},{"id":"msc:g113","role":"maintainer"},{"id":"msc:c4","role":"output from mapping"},{"id":"msc:c20","role":"output from mapping"},{"id":"msc:t22","role":"tool"},{"id":"msc:t23","role":"tool"},{"id":"msc:t24","role":"tool"},{"id":"msc:t31","role":"tool"},{"id":"msc:t61","role":"tool"},{"id":"msc:t66","role":"tool"},{"id":"msc:t81","role":"tool"},{"id":"msc:t83","role":"tool"},{"id":"msc:t84","role":"tool"},{"id":"msc:g20","role":"user"},{"id":"msc:g31","role":"user"},{"id":"msc:g32","role":"user"},{"id":"msc:g53","role":"user"},{"id":"msc:g55","role":"user"},{"id":"msc:g91","role":"user"},{"id":"msc:g148","role":"user"}],"slug":"ddi-data-documentation-initiative","title":"DDI (Data Documentation Initiative)","uri":"https://rdamsc.bath.ac.uk/api2/m13","versions":[{"number":"2.1","title":"DDI Codebook","valid":{"end":"2014-01-29","start":"2005-01-01"}},{"number":"3.1","title":"DDI Lifecycle","valid":{"end":"2014-03-12","start":"2009-10-18"}},{"number":"2.5","title":"DDI Codebook","valid":{"start":"2012-01-17"}},{"locations":[{"type":"website","url":"https://ddialliance.org/ddi-l_v3.2"}],"number":"3.2","title":"DDI Lifecycle","valid":{"end":"2020-04-15","start":"2014-03-12"}},{"issued":"2020-04-15","locations":[{"type":"website","url":"https://ddialliance.org/ddi-l_v3.3"},{"type":"document","url":"https://docs.ddialliance.org/DDI-Lifecycle/3.3/model/"}],"number":"3.3","title":"DDI Lifecycle","valid":{"start":"2020-04-15"}},{"available":"2024-12-12","locations":[{"type":"document","url":"https://docs.ddialliance.org/DDI-Lifecycle/dev/model/"}],"number":"4.0","title":"DDI Lifecycle"}]},"id":"msc:m13","role":"supported scheme"},{"data":{"dataTypes":["msc:datatype2"],"description":"<p>The CESSDA Metadata Model contains metadata elements, their definitions and information on other requirements, such as repeatability. The Model is built from the viewpoint of quantitative (social science) data and is based on DDI Lifecycle 3.2 metadata standard.</p>","identifiers":[{"id":"10.5281/zenodo.4672413","scheme":"DOI"}],"keywords":["http://vocabularies.unesco.org/thesaurus/concept425","http://rdamsc.bath.ac.uk/thesaurus/subdomain625","http://vocabularies.unesco.org/thesaurus/concept442","http://vocabularies.unesco.org/thesaurus/concept382"],"locations":[{"type":"document","url":"https://doi.org/10.5281/zenodo.4672413"},{"type":"website","url":"https://www.cessda.eu/Metadata-Office"}],"mscid":"msc:m50","relatedEntities":[{"id":"msc:m121","role":"child scheme"},{"id":"msc:g143","role":"funder"},{"id":"msc:m13","role":"parent scheme"},{"id":"msc:t22","role":"tool"},{"id":"msc:g20","role":"user"},{"id":"msc:g143","role":"user"}],"slug":"cessda-mli-council-european-social-science-data-archives-minimum-level-inf","title":"CESSDA CMM - Council of European Social Science Data Archives Metadata Model","uri":"https://rdamsc.bath.ac.uk/api2/m50"},"id":"msc:m50","role":"supported scheme"}],"slug":"ddi-tools","title":"DDI Tools","uri":"https://rdamsc.bath.ac.uk/api2/t22"}}