the implementation of the sdmx standards by the ecb and the european system of central banks werner...
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The implementation of the SDMX standards by the ECB and
the European System of Central Banks
Werner Bier (ECB)
Gérard Salou (ECB)
Sami Airo (Bank of Finland)
• The SDMX data model and the ESCB systems
• ESCB/Eurosystem implementations of the SDMX standards in:
– data structures (compliant with the SDMX information model)
– data and metadata exchanges using SDMX-EDI (GESMES/TS)
– web dissemination
• interface to the statistical data warehouse
• euro reference exchange rates
• euro area aggregates and national breakdowns; example: the Bank of Finland implementation
• Costs and benefits
• Way ahead; conclusions
Presentation structure
The SDMX data model (and star schema):
AFREQUENCY
REF_AREA DE ADJUSTMENT N
TRANSACTION B101
ASSET Z
SECTOR 0
CP_SECTOR 0
USE_RES 2
DENOM N
SUFFIX 08
Observation 34955
TIME PERIOD 2005
the model is used in all layers of the ECB systems
…and associated attributes, e.g.• observation status, etc.& «higher level» attributes, e.g.• units• methodological info, etc
Use of (SDMX-based) data structures
• In the exchange, storage and dissemination of all data and associated metadata
• In the internal system and the communication with partner institutions and the general public (SDMX-ML based extractions from the web site)
• Covering most domains of economic statistics (e.g. monetary and financial statistics, balance of payments, price indices, short-term statistics, real sector, government finance statistics, securities, etc.)
SDMX-EDI (GESMES/TS) used in all data file-based data exchanges
27 EU central banks
ECB
EUROSTAT BIS
7 EU NSIs
IMF
ESCB
full support of extractions in SDMX-ML format
The ECB statistical data warehouse on the web
Euro reference exchange rates
Extractions into SDMX-ML format
Euro area aggregates and national breakdowns
ECB web site contents ● SDMX-ML ● mirrored NCB sources
Example: the ECB web page
Extractions into SDMX-ML format
The mirroredBank of Finland implementation
Euro area aggregates and national breakdowns
Example: the Bank of Finland (BoF) web page
How does this work?
XSLLayoutof BoF
website
ECB database
XML Data
from ECB
database
SDMX v1
XSLLayoutof ECB
website
BoF
OECD BIS
Statistics Finland
IMF
ECB
EUROSTAT ETLA
SDMX-EDI data exchanges at BoF
• The ESCB statistics sites appear as a co-ordinated
network with an entry point in all national central
banks (NCBs)
• Users do not have to leave the NCB web site to
consult ESCB data
• Look and feel of NCB web site can be applied
• Data is available in all Eurosystem national
languages
• Translation into national language is done by XSL
file and key family metadata
Achievements
Euro area aggregates and national breakdowns
Costs:
• Initial investment in tools and expertise (small if there is already a proper database infrastructure);
• Maintenance (negligible, as compared with less automated
means and tools)
SDMX implementations: costs and benefits
• structural metadata maintenance;
• technical maintenance
Benefits:
• Automation; efficiency; resources can be shifted to more important activities
• Minimum problem solving;
• Statistical harmonisation
• Common “language” and easy data sharing with others
• Flexibility; very fast and easy adaptation to other domains
• Rich metadata coverage
• Easy response to new requirements
• Great service to researchers; and to other domestic, European and other continents’ institutions
SDMX implementations: costs and benefitsRough estimates
• SDMX implementations in bulk data exchange -
estimated savings: (at least) 120 FTE per year;
also, lifespan of initial investment has been spectacular! The need for (very tiny only) changes in the basic technical infrastructure (write/read/load applications) has been negligible.
• SDMX benefits from the web dissemination:
so far, mainly to the ECB/NCBs profile and credibility, benefits to the general public and other institutions;
drastically reduced costs by not needing anymore “to send” data to institutions with which there are special agreements;
benefits become even more significant (also for home and third parties’ users) as more and more institutions implement
• More SDMX implementations across the globe
• Reducing costs of data sharing to a minimum
• The ECB already offers euro area data in SDMX-ML (easily downloadable by other institutions’ applications)
• ECB users keen to benefit from the implementations of other continents’ institutions
A world-wide implementation: way ahead
Questions?
Further information on the ECB statistics and SDMX:
http://www.ecb.int/stats/html/index.en.htmland then: “Data services”
e-mail: [email protected] (ECB)
[email protected] (Bank of Finland)
Thank you!