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QuestasyTechnical Overview
Alerk Amin
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Data Dissemination Requirements
Data collection
Multiple languages
One system– Data and metadata– Administrators and researchers
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LISS Panel
~5000 households in Netherlands
Studies conducted on various schedules
Datasets prepared on various schedules
Comparability
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Solution: Questasy
Developed by CentERdata
Web application
Manage and distribute survey data and metadata
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Administrator Interface
Upload data files
Enter survey metadata
Manage security
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Researcher Interface
Browse and search survey metadata
Download data files
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Questasy Website Integration
Questasy
www.lissdata.nl
/lissdata
ResearcherInterface(External)
Database
AdministratorInterface(Internal)
StaticWeb Pages(External)
/dataarchive
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Questasy Implementation
MVC Architecture
Model based on DDI 3
Search
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MVC Architecture
Questasy
Client(Web Browser)
Database
Model
ControllerSecurity
ViewDispatcher
Internet1
2
3
4
56
7
8
9
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DDI 3
Emerging standard for data documentation
Longitudinal studies
Elements and relationships
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DDI 3 Relationships in Model
Concepts(n:m)
Variables(n:m)
QuestionConstructs
(1:n)
ResponseDomain
(n:1)
QuestionScheme
(n:1)
QuestionItem
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DDI 3 in Database
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Search
Researcher interface
Sphinx search engine
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