QuestasyTechnical 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

www.lissdata.nl

/lissdata

ResearcherInterface(External)

Database

AdministratorInterface(Internal)

StaticWeb Pages(External)

/dataarchive

Questasy Implementation

MVC Architecture

Model based on DDI 3

Search

MVC Architecture

Questasy

Client(Web Browser)

Database

Model

ControllerSecurity

ViewDispatcher

Internet1

2

3

4

56

7

8

9

DDI 3

Emerging standard for data documentation

Longitudinal studies

Elements and relationships

DDI 3 Relationships in Model

Concepts(n:m)

Variables(n:m)

QuestionConstructs

(1:n)

ResponseDomain

(n:1)

QuestionScheme

(n:1)

QuestionItem

DDI 3 in Database

Search

Researcher interface

Sphinx search engine

Demonstration

www.lissdata.nl