EDDI Conference System, EDDI16 – 8th Annual European DDI User Conference

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Creating a DDI-Lifecycle based Metadata Schema for the GESIS Data Archive
Esra Akdeniz, Wolfgang Zenk-Möltgen

Last modified: 2016-09-27


The project DDI-LimDAS is the effort to create a metadata schema on the basis of DDI-Lifecycle for all metadata items, which are processed at the Data Archive. So far, DDI-Codebook has been used as the predominantly metadata format and only single applications were based on DDI-Lifecycle. Diverse applications are in use for the purposes of documenting the data holdings on study and variable level, for registering and discovering datasets, for supporting new questionnaire design, for enabling data cleaning, harmonization, and long-term archiving. To enable interoperability of metadata between all those applications, a common data model is absolutely necessary. This will reduce complexity and enable a centralized metadata store.

Preliminary results and experiences have already been presented at EDDI15. Since then, progress was made in collecting the base metadata schemata from more applications and mapping them to a common metadata model. Another significant new result is the mapping of each element of the common schema to a DDI-Lifecycle element. The mapping also contains constraints so that a valid DDI Instance and a DDI Profile can be generated. The presentation will show the overall state of the project and examples of the mappings to the common metadata schema.

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