Questasy Technical Overview Alerk Amin
Data Dissemination Requirements Data collection Multiple languages One system –Data and metadata –Administrators and researchers
LISS Panel ~5000 households in Netherlands Studies conducted on various schedules Datasets prepared on various schedules Comparability
Solution: Questasy Developed by CentERdata Web application Manage and distribute survey data and metadata
Administrator Interface Upload data files Enter survey metadata Manage security
Researcher Interface Browse and search survey metadata Download data files
Questasy Website Integration Questasy /lissdata Researcher Interface (External) Database Administrator Interface (Internal) Static Web Pages (External) /dataarchive
Questasy Implementation MVC Architecture Model based on DDI 3 Search
MVC Architecture Questasy Client (Web Browser) Database Model ControllerSecurity ViewDispatcher Internet
DDI 3 Emerging standard for data documentation Longitudinal studies Elements and relationships
DDI 3 Relationships in Model Question Item Question Scheme (n:1) Response Domain (n:1) Question Constructs (1:n) Variables (n:m) Concepts (n:m)
DDI 3 in Database
Search Researcher interface Sphinx search engine
Demonstration