Case study: Turkish Statistical Institute

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Contact person*	Nilgün Dorsan
Job title	Head of Department
Email	nilgun.dorsan@tuik.gov.tr
Telephone	+903124100267

Summary*

Testing

Metadata strategy

Turkstat developed a strategy to create a metadata system that is comparable with international standards. The aim is to integrate the metadata stored in various places into one system; so that once metadata is created and stored, it can be reused everytime it is needed. The metadata is planned to be stored in a flexible, modular system so the system can be expanded and adapted according to the changing user needs and organizational needs. The system need to have the functionality of producing metadata reports comparable with different international standard formats.

Current situation

Currently the metadata system consists of the reference metadata published on the website and the metadata stored in production databases in DDI format. In addition to these two main systems, there are also other metadata kept in isolated systems.

Reference metadata about statistics are published in Turkstat’s web page in SDDS format. Definitions of variables and concepts about statistical data are published in the web page for each statistics/product separately. The classification server is accessible through the web. It contains the national and international classifications (http://tuikapp.tuik.gov.tr/DIESS/ChangeLocaleAction.do?dil=en).

In 2012 TurkStat began to use a DDI tool to catalogue metadata. This new tool holds the reference metadata for surveys along with the structural metadata. The structural metadata (datasets and variable groups) is used as an input by the Harzemli system to create electronic survey forms. Therefore the data structure defined in the metadata editor is directly used in one of the components of the production system.

A comprehensive metadata management system is designed to cover the components of both ESMS and ESQRS, as well as all other metadata that is produced within the organization stored in various places and managed by using different tools. The new system is planned to be built in phases, and planned to provide a link among different sources of metadata.

Metadata Classification

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Metadata system(s)

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Costs and Benefits

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Implementation strategy

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IT Architecture

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Metadata Management Tools

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Standards and formats

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Version control and revisions

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Outsourcing versus in-house development

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Sharing software components of tools

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Overview of roles and responsibilities

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Metadata management team

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Training and knowledge management

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Partnerships and cooperation

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Other issues

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Lessons learned

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