The Single Data Dictionary

Eurofiling workshop

08/06/2017

Antonio Olleros

ECB – DG Statistics

Rubric

www.ecb.europa.eu

Complexity of the data process

ECB Information System

NCB Information System

Bank Information System

2

Rubric

www.ecb.europa.eu

Role of (active) data dictionaries in a system

Collect Produce Disseminate

Data dictionary

3

Rubric

www.ecb.europa.eu

Integration initiatives overall view

Reporting agent

(reporting area)NCB ECB

SDD BIRD ERF

One methodology, unique semantics

Exchange

file

Exchange

file

4

Rubric

www.ecb.europa.eu

Goal of SDD

Is “Central banks” the

same as “Central bank”?

Integration of ECB data dictionaries

Common syntax for the

dictionaries

Methodological integration

Semantic integration

Set up a methodology (SMCube)

compatible with those already existing

Map other methodologies to SMCube

Import existing concepts

Create unique/reference concepts

Map existing to reference concepts

5

Rubric

www.ecb.europa.eu

Interoperability: The SDD proposed solution

Multiple dictionaries Single dictionary

6

Rubric

www.ecb.europa.eu

Mappings

Core

DomainSub

DomainMember Variable Hierarchy

Data Definitions

Cube Cube

StructureCombination

Transformations Rendering

Pro

vis

ion

ing

SMCube

Exte

nsib

le

His

tori

se

d

SMCube packages

7

Rubric

www.ecb.europa.eu

SDD as active dictionary

SDD

Exchange scheme

(XBRL taxonomy,

SDMX structure

defintion…)

User-friendly

representation

System

physical

tables/views

8

Rubric

www.ecb.europa.eu

The multiple codes problem

ISSUER_SECTORIssuer ESA 2010 sector

S_13 - General government

S_121 - The central bank

S_122 - Deposit-taking corporations except the central bank

BSIBS_COUNT_SECTOR

BS counterpart sector

2100 - General Government

1100 - Central Bank (S.121)

00BK - Non-resident banks

SHS

CPS Counterparty sector

x1 - General governments

x10 - Central banks

x12 - Credit institutions

FINREP

INSTTNL_SCTRInstitutional sector

13110Z - Central government (excluding social security funds)

12100Z - Central banks

12200A - Credit institutions

AnaCredit

9

Rubric

www.ecb.europa.eu

SDD reference dictionary integration

SHS

S_121

x101100

12100Z

Non

-re

fere

nce

Re

fere

nce

10

Rubric

www.ecb.europa.eu

A more complex (and realistic) example

FREQ ISIN_CODE ITEM FINAL_MATURITY

M AB123456789 F1 2016_10_05

M CD123456789 F1 2052_01_31

M EF123456789 F2 2019_02_29

ISIN TYP_INSTRMNT ORGNL_MTRTY DT_MTRTY

AB123456789 1 1 05/10/2016

CD123456789 1 1 31/01/2052

EF123456789 1 2 29/02/2019

ORGNL_MTRTY1 - Short term

2 - Long termTYP_INSTRMNT 1 - Debt security

ITEMF1 - Short term debt security

F2 - Long term debt security

FREQ M - Monthly

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Rubric

www.ecb.europa.eu

Thank you for your attention!

Questions?

12

Rubric

www.ecb.europa.eu

Methodological compatibility challenge

Core artefacts for

describing reality

Core artefacts for

defining datasets

Definition of other

aspects relevant for

statistical systems

SDMX IM DPM

•Representations (codelists and facets)

•Concepts

•Codes

•Hierarchical codelists

•Data Structures Definitions: Concepts and representations are attached to a multidimensional structure

•Makes explicit additional information

•Validation and transformation language

•Structure sets and mappings

•Data provisioning

•…

•Domains

•Dimensions

•Members

•Hierarchies

•Tables: Pairs dimension-member attached to tables axes

•Only business information is made explicit

•Validation rules

•Rendering

•Concepts properties

Very similar

More challenging

Take the maximum

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