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Questasy: Online Data Dissemination with DDI 3

Questasy is a web application developed by CentERdata that enables the efficient management and dissemination of survey data and metadata online. With complete documentation, advanced search capabilities, and support for multiple languages, Questasy simplifies the process of sharing data with researchers.

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Questasy: Online Data Dissemination with DDI 3

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  1. Questasy A web application for online data dissemination based on DDI 3 Alerk Amin Marika Puumala

  2. Contents • Background & requirements • Solution: Questasy & DDI 3 • Demonstration

  3. Background • CentERdata • LISS panel • Online panel of ~8000 individuals • Free survey data & data collection • Diverse questionnaires each month (~30 mins in total) • Disseminate all data

  4. Diversity of Surveys • Various topics • Single wave studies • e.g. European Value Survey (partial) • Longitudinal studies • e.g. LISS Core Study • Varying data collection frequency

  5. Objectives for Data Dissemination • Previously • No dissemination tool or standard • Data delivered ‘ad hoc’ in SPSS files + Word codebooks • Goal • Disseminate all data collected in the panel via a website (www.lissdata.nl)

  6. Dissemination Requirements • Complete documentation in database • Studies, questions, variables, … • Longitudinal/multi-measure studies • Public and restricted access + administrator views • Advanced search • Multiple languages • Use an international standard -> DDI 3

  7. Solution: Questasy • Developed by CentERdata • Web application • Manage and distribute survey data and metadata

  8. Questasy Website Integration www.lissdata.nl /lissdata /dataarchive Static Web Pages (External) Researcher Interface (External) Administrator Interface (Internal) Database Questasy

  9. Questasy Implementation • PHP / MYSQL • MVC Architecture • Model based on DDI 3 • Search

  10. DDI 3 Relationships in Model

  11. DDI 3 in Database

  12. Search • Researcher interface • Sphinx search engine

  13. Demonstration • www.lissdata.nl

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