MISSY 2 [Microdata Information System – part 2] Implementing DDI 3: The German Microcensus Case Study andias.wira-alam@gesis.org oliver.hopt@gesis.org
Information Processes in the Social Sciences Frank Sawitzki Prof. Dr. York Sure Sure Andias Wira Alam Benjamin Zapilko Daniel Hienert Engin Sagbas Oliver Hopt Peggy Fischer Peter Mutschke Dr. Philipp Mayr Philipp Schaer Wei Shen Siegfried Schomisch Ute Koch Timo Wandhöfer Simon Bachenberg
Issues: Documenting the Metadata at Variable Level. DDI 3 Editor? Metadata Presentation?
(Scientific Community) General Work Flow A B Public (Scientific Community) Federal Statistical Office A B The Federal Statistical Office (Destatis)… provides access to microdata for scientific purposes (scienitifc use files). provides survey documents for MISSY. in collaboration with, produces scientific use files of the Microcensus (e.g. anonymisation, construction of variable labels). GESIS provides… provides metadata for the Microcensus scientific use files on the Web (MISSY): codebook and detailled variable information in DDI 3 format. study description and study related material (e.g. questionnaires, definitions, interviewer guides). examples and recommendations on analysing the metadata. 4 4
(Example: Code Book and Questionnaire) Available Materials (Example: Code Book and Questionnaire) Code Book
(Example: Code Book and Questionnaire) Available Materials (Example: Code Book and Questionnaire) Questionnaire
Code Book & Questionnaire What goes to where? (DDI 3 structure) Questionnaire Code Book & Questionnaire Code Book Variable Name (EF Number) Variable Label Question Number (no text and other details) Frequencies Question Number Question Text
<DataCollection> <QuestionScheme> <QuestionItem> What goes to where? (DDI 3 structure) DDI 3 Code Book & Questionnaire Code Book Variable Name (EF Number) Variable Label Question Number Question Text Frequencies <DataCollection> <LogicalProduct> <PhysicalInstance> <QuestionScheme> <CategoryScheme> <Statistics> <VariableScheme> <VariableStatistics> <QuestionItem> <Variable> reference reference
Subjects (Categorization) Comparable Variables (DDI 3 structure ++) Subjects (Categorization) Subject 1 Subject 1.1 Subject 1.2 Subject 2 Subject 2.1 Subject 2.1.1 Subject 2.1.1.1 Subject 2.1.1.2 EF xy (1995) belongs to comparable comparable belongs to EF yz (1996) comparable presentation EF xy (1995) EF yz (1996) Subject 1.2 Subject 1.1
DDI 3 Editor 1973.ddi 1978.ddi 2004.ddi 2007.ddi Support Multi User
Software Architecture DDI 3 EDITOR WebDAV Server store DBClear Data Service Transforming DDI 3 into DBClear format WebServer (Typo3) XML + XSLT + Groovy USERS HTML View edit DDI 3.0 Editor DDI Service Web Information System request Software Architecture Views c a b Model
DDI to Metadatabase Lucene Index Database Indexing
Web Information System in MISSY: (3 detail views of the metadata - dynamic pages) List of Variables (Variablenliste). Subject Outline (Thematische Gliederung). Timeline Matrix of Variables (Variablen-Zeitpunkte-Matrix).
Acknowledgement Future Work This project is funded by the BMBF Germany (01UW0707 - "Servicezentrum für Mikrodaten der GESIS / MISSY II"). Future Work Integrating with regional microcensus. Improving our application (e.g. performance, search capabilities, object oriented database, etc) so it can be used also by other studies. Open Research Data.