Joint UNECE/Eurostat/OECD work session on statistical metadata (METIS) 1 3-5 APRIL 2006Mar Blanco...

Joint UNECE/Eurostat/OECD work session on statistical metadata (METIS) 13-5 APRIL 2006 Mar Blanco Frías

STATISTICAL METADATA MODEL DEVELOPED IN SPAIN:CURRENT AND

FUTURE USE AND APLLICATIONSTopic (ii): Metadata Concepts, Standards, Models and Registries

GENEVA, 3-5 April 2006

Mar Blanco Frías

Joint UNECE/Eurostat/OECD work session on statistical metadata (METIS) 23-5 APRIL 2006 Mar Blanco Frías 2

Obj

ecti

ves

1. To explain the metadata model current status

• Give a general view of the model: functional, management and user points of view

2. To explain the metadata role inside INE

• Information about current applications of the metadata project and the way forward

OBJECTIVES OF THE PRESENTATION


Metadata model description and status1

INDEX

Role of the metadata inside INE2

Functional point of view1.1

1.2

1.3

Management point of view

User point of view



INDEX



1.2

1.3


User point of view


FUNCTIONAL POINT OF VIEW- FIRST PHASE1.1

• Fuctionally speaking the metadata project has been divided in two phases:

The first one concerning Statistical Operations The second one concerning Regulations

• The basic concepts used in the first phase are:1. Statistical Operation: set of activities leading to obtain statistical

results about a specific sector or issue from individually collected data

2. Variable: information about the unit being studied. In most cases, this variables use to correspond to a unique question in the questionnaire

3. Classification: set of classes or categories which fix the values that a variable can get. When talking about an international Regulation we talk about standard classifications



• The objective of the first phase is to have a repository including all surveys, in a relational Database supported by Oracle . Currently the Database contains the following information:

System element NumberStatistical Operations 102

Survey Questionnaires 253

Variables 8.187

Non-standardised classifications 1.434

• The information is classified in two ways:

Horizontal Organization Vertical Organization

Statistical Operations

QuestionnairesVariables

ThematicClassificationvariables

ThematicClassificationclassifications

Classifications

Standard

No Standard



• Variables and classifications are classified using 3 levels of detail. The following number of themes are available at each level for variables and classifications:

Thematic classification of Variables

Thematic Classification of Classifications

# First level 28 17

# Second level 181 133

# Third level 445 535

FINAL OBJECTIVE

To achieve a high degree of both internal and international harmonization that allows better comparisons

In the case of variables, the thematic classification allows to compare how the different Units request similar information

In the case of classifications, the thematic classification allows to harmonize by eliminating superflous classifications


FUNCTIONAL POINT OF VIEW- SECOND PHASE1.1

• The second phase of the project is devoted to international Regulations and standardised concepts.The objective in this case is to bear a special attention to those variables included in a Regulation, among all variables.

Using Regulations and CODED as a source of the concepts• To fulfill this objective a second relational Database has been

constructed:

VARIABLES IN STATISTICAL OPERATION

VARIABLES IN REGULATION

CONCEPTS FOR THIS VARIABLESTRANSITION

MATRIX

PHASE 1 PHASE 2

• This database allows to ensure that all variables requested in the Regulation are indeed included in the Statistical Operation

Also to identify the variables included in the Statistical Operations and not requested in the corresponding Regulation and understand why

CLASSIFICATIONS



INDEX



1.2

1.3


User point of view


MANAGEMENT POINT OF VIEW1.2

• The maintenance of the System is carried out by means of a Metadata Management System

This prevents the operator from making mistakes when working directly in the tables

It allows to introduce and modify information in the Database in a easy and friendly way

• Some Windows of the Management System:

SISTEMA DE GESTION



INDEX



1.3

1.2

User point of view



USER POINT OF VIEW1.3

• From a user point of view, it is not usefull to have greats amounts of information stored in tables if you are not able to exploit it as much as possible

The search Engine allows the user to efficiently find different types of information using different search criteria

Available in the Intranet• Different possibilities:1. Thematic Searches: The user gets all the variables (or

classifications) clasified in the selected theme Allows to compare how the different Statistical

Operations request information about the same theme Allows to see relationships variableclasifications

(1:n) and classifications variable(1:n)2. Comparison of Statistical Operations: By means of a metodology to

analyse similarity between variables and classifications in two Statistical Operations

3. Searches in regulations: It allows to generate a report connecting variables in a Statistical Opration with those in the corresponding Regulation

4. Global search: By litheral, theme, global character chain…



• Some Search Engine windows (I):

SISTEMA DE CONSULTAS

Global search

Concept definitionStandard Classifications

search

Thematic search for Variables



• Some Search Engine windows (II):

Search by Statistical Operation

Possibilities:• See the

questionnaire as it is stored in the DB

• See variables in the SO which are requested in the Regulation

• See the associated Regulation

Search by RegulationPossibilities:• See the Regulation as

it is stored in DB• See the variables in

the Regulation with its attributes (internal codes, periodicity…)

• See Variables in the Regulation which are requested in some SO



INDEX



1.3 User point of view

Management point of view1.2


ROLE OF METADATA INSIDE INE2

• Metadata has an important role in quality issues inside INE It is used as a quality indicator in surveys• Currently the metadata project is used in the Eurostat Task Force

on Core Social Variables All information about social surveys is included in the

metadata database => Metadata is a powerfull tool to compare how this surveys request the information and harmonize both internally and at European level

• Metadata is a first step towards a complete documentation database

• Usefull to help to define taxonomies in XBRL metainformation exchange project

• FUTURE WORK:1. Include not only Statistical operations under INE responsability

but also those carried out by other Ministries and Government bodies

2. Link metadata to data it will help to reduce the load to informers in Economic Surveys.


AND THAT’S ALL…. THANK YOU FOR YOUR ATTENTION!

Joint UNECE/Eurostat/OECD work session on statistical metadata (METIS) 1 3-5 APRIL 2006Mar Blanco...

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