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Metadata management and statistical business process at Statistics EstoniaWork Session on Statistical Metadata
(Geneva, Switzerland 8-10 May 2013)
Kaja Sõstra, Eda Froš
Outline
Overview of integrated metadata management system Statistical information system and business process model Current metadata projects Future plans Conclusions
Integrated metadata management system iMETA
Outsourced project August 2010 – July 2011 Integration of iMETA with other subsystems of our
statistical information system (SIS) Metadata driven SIS
Bilingual application; metadata will be stored in Estonian and in English
Purposes of the new metadata management system
To support the whole statistical business process; To enable the storage of metadata once for all usages; To act as an instrument for harmonising and standardising
metadata; To act as a central repository for all subsystems and for
various outputs regardless of purpose, media, format and time.
Source documents
Neuchâtel Terminology Model – classification database object types and their attributeshttp://www3.ssb.no/stabas/DOCS/Neuchatelversion2.1.pdf
Neuchâtel Termonology Model – variables and related conceptshttp://www.ssb.no/english/metadata/metadatadocuments/varneuchatelnodel.pdf
MMX Metadata Framework – implementation of MOF (built on relational database) technologyhttp://www.mmxframework.org/
Content of iMETA
Metadata navigator Statistical activities Classifications Concepts Statistical units types and statistical characteristics Measurement units Information about questionnaires Legal acts Databases
General architecture of metadata system
User interface
Metadata navigator
Metadata repository contains metadata managed by iMETA application and also metadata managed by other applications.
Metadata navigator gives an overview of all metadata stored in metadata repository (terminology objects, SQL objects, etc.)
Classifications
Classification – kind of umbrella that comprises one or several classification versions
Classification version – structured list of mutually exclusive categories
Classification variant – the original categories of classification version are split or regrouped to provide context-specific additions to the standard structure
Correspondence tables
Classification screen
Statistical activities (I)
Statistical activity –the collection, storage, transformation and distribution of statistical information
In Statistics Estonia the concept of statistical activity includes not only the conducted statistical surveys, but also management of statistical registers, compilation of yearbooks and analytical publications as well as other works related to the production of statistics
Every year a new version (instance) of statistical activity is being described
Statistical activities (II)
The description of statistical activity is based on ESMS concepts, supplemented by special attributes needed for Statistics Estonia.
All attributes are grouped as: General information Methodology Quality Dissemination VVIS (electronic data collection system) E-respondent
New attributes and groups can be added
Statistical activity screen
Statistical activities (III)
Description of statistical activities enables To present descriptions of surveys according to Euro-
SDMX structure (ESMS) on the web To create a document of Statistical Programme for 5 years; To present list of conducted statistical activities with short
description by years on the web To create XML file according to Euro-SDMX MSD
Defining variables
Simplified variables model
Architecture of the information system
Dissemination
Statistical registers
Metadata system
Data collection ProcessingStatistical analysis
Persons
Administrative registers
Users
Economic entities
Data Warehouse
iMETA
VVISADAM eGeostat
SRS
VAISeSTAT
PX-Web
Census-HUB
KUNDE
Analyse
2002Statistical
Farm Register
CRM
2006
Px-web
1994Statistical Business Register
eStat
2006
VVIS
20112006
economicentities
2006economic entities
2001metadata
management
2011iMeta
project started 2011 system for
statistical registers
project started2011
project started2011 persons
planned
Generic Statistical Business Process Model
project started
2012
Links between metadata repository and other systems
VAIS iMETA eSTAT, ADF
URMA
VVIS KUNDESRS
SMDX repo META
Current metadata projects
Implementation of ESS metadata standards on describing statistical activities and disseminating data
Describing reference metadata (in the metadata system) for all statistical activities according to ESMS.
Modernisation of reference metadata describing and update processes
Preparation for dissemination of reference metadata on the website
Technical development of iMeta
Future plans
Dissemination of ESMS based reference metadata on the web is planned on the 1st of July this year
Release of concepts and definitions on the web of Statistics Estonia. Replacement of current HTML version of concepts and methodology in output database
Further development of iMeta in line with developments of other components of statistical information system
Conclusions
Several parallel developments course problems of specification common requirements for all systems. Unfortunately, all new developments bring along some changes in the metadata system
Responsible unit and persons should be appointed for management of metadata
Creation of new metadata, filling in the gaps and harmonisation is very labour-intensive. Support from management and other people in the office is essential for success.
Special guidelines and rules should be created. All potential internal users of metadata system should be informed about the development process and involved in it.
Thank you for your attention!kaja.sostra@stat.ee
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