1. Page 1 Development of Metadata System at Croatian Bureau of Statistics Development of Metadata System at Croatian Bureau of Statistics Presented by Maja Ledić Blažević, Project leader of metadata development

2. Page 2 Development of Metadata System at Croatian Bureau of Statistics Contents Development of the metadata system Metadata methodology

3. Page 3 Development of Metadata System at Croatian Bureau of Statistics Development of Metadata System Mapping metadata systems to METANET Reference Model TM –PC-Axis Macrometa 2.0 –CROMETA #1 (first metadata system at CBS) Result: CROMETA #2 model –extended reference model including necessary concepts or characteristics from mapped models –accompanying tool for browsing and maintaining metadata

4. Page 4 Development of Metadata System at Croatian Bureau of Statistics Development of Metadata System Methodology development –mapping different metadata consumer’s models to Reference Model TM –collection of metadata in CBS –specifications and support for technical implementation Technical implementation –conceptual design of metadata model –physical implementation –development of maintenance tool

5. Page 5 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology Metadata sections Studies and questionnaires Variables and measurements Classifications Publications Organisational structure History and version handling General metadata Processing and validation rules Access and authorization rules

6. Page 6 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology Extensions of Reference Model TM in CROMETA #2 –additional concepts and/or characteristics Hierarchical structures –Organisation scheme - hierarchy of organisations –Theme structure – hierarchy of themes; not mutually exclusive structures –Questions in questionnaire - hierarchy in context of questionnaire (reuse)

7. Page 7 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology Status and Version Handling –versions of metadata objects version number, validity period, predecessor, successor, status –status of metadata object – mandatory information Under development Released Authorised Frozen Archived Deleted –dependence between status and version of metadata object

8. Page 8 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology General properties – attributes of all metadata concepts, e.g. multilingual title and description General metadata concepts - applicable to any metadata object Keyword Footnote Title (official, short, medium, alternative etc.) Language Document Free-text characteristic Milestone Status

9. Page 9 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology Meta-metadata –Organisation level – institution, statistical division, statistical department –User group type – administrators, experts –Privileges – add, edit, delete –Variable type - alpha variable, beta variable, gamma variable, time variable –Cube availability - official, internal, private, etc. –Compatibility – compatible with Eurostat definition, not compatible with Eurostat definition, etc.

10. Page 10 Development of Metadata System at Croatian Bureau of Statistics Metadata Methodology Collection of metadata –five appointed surveys – studies and questionnaires, statistical objects and variables –Program of Statistical Activities – organisational structure, theme structure –CROMETA #1 – measurements, studies and questionnaires –PC-Axis – theme structure –HR - organisational structure

11. Page 11 Development of Metadata System at Croatian Bureau of Statistics CROMETA #2 Model > 170 concepts > 230 tables

12. Page 12 Development of Metadata System at Croatian Bureau of Statistics CROMETA #2 Model

13. Page 13 Development of Metadata System at Croatian Bureau of Statistics

14. Page 14 Development of Metadata System at Croatian Bureau of Statistics

15. Page 15 Development of Metadata System at Croatian Bureau of Statistics Summary Present status –ongoing collection of metadata –development of section of processing and validation rules –testing and feedback collection Future plans –further adjustment/development of the model and maintenance tool –building ‘generators’ – applications for generating programs for data processing based on metadata

16. Page 16 Development of Metadata System at Croatian Bureau of Statistics Thank you for your attention Presentation performed by Maja Ledić Blažević, Senior IT Adviser Central Bureau of Statistics of Croatia Tel. +385 1 4806257 Fax: +385 1 4806141 E-mail: majalb@dzs.hr