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ESS.VIP Validation. Objectives, scope & concepts. Angel Simón Delgado EUROSTAT Email: ESS.VIP VALIDATION. VIP VALIDATION – First Phase VIP VALIDATION – Deliverables in First Phase ESS.VIP VALIDATON – Definition of the project

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ess vip validation

ESS.VIP Validation

Objectives, scope & concepts

Angel Simón Delgado



ess vip validation1
  • VIP VALIDATION – First Phase
  • VIP VALIDATION – Deliverables in First Phase
  • ESS.VIP VALIDATON – Definition of the project
  • Validation Service (EDIT)
ess vip v first phase
ESS VIP-V First Phase

Overall goal:

To develop validation solutions to be used by different production chains (horizontal integration), within the ESS (vertical integration)

Bottom-up approach:

  • Extensive consultation of all possible stakeholders
  • Participative management
  • Business driven approach
  • From pilots experience to general principles
scope objectives and outputs

ESS VIP-V First Phase

Scope, objectives and outputs
  • Documentation / Standardisation:
    • template and guidelines for process description
    • template and guidelines for a standard documentation of the validation process
  • Methodological analysis of Data Validation
    • Typology of validation rules
    • Standard definition of validation levels
    • Standard formalised “syntax” (understandable by business users) to express validation rules
  • Distribution of responsibilities in the production chain
    • Guidelines to be used for the attribution of responsibility in the whole production chain (MSs and Eurostat) by the WG.
    • Guidelines based on efficiency principles (Validation  Corrections: “the sooner, the better”)
    • Preparing for IS/IT solutions and architecture
scope objectives and outputs1

ESS VIP-V First Phase

Scope, objectives and outputs
  • Towards IT/IS solutions and architecture:
    • Users’ requirements to develop a new software to allow business users to input validation rules and the corresponding error messages in a shared Central Repository of Validation Rules. The new software should be able to generate the rules in the Validation syntax developed by the project.

b) Validation Architecture defining the elements and their relationships in an integrated validation system ("common platform") to be used by:

      • Internal users, in an appropriate IS architecture to facilitate horizontal integration of IT/IS systems
      • All stakeholders in the production chain

ESS.VIP Validation First Phase - Deliverables




1.1 Inventory of documents

1.2 Analysis of inventory

1.5 Inventory of validation rules

1.6 Inventory of error messages

1.3 Validation & statistical processes

2.4 Analysis of validation typologies

3.1 Validation rules by typology

3.3 Error messages

1.4 Validation typologies

2.4 Analysis of validation typologies

2.5 Levels of validation


Templates & Guidelines

3.2 Validation syntax

4.1 Functional specifications for GUI

2.1 Documentation of validation process

2.2 Documentation of statistical process

3.3 Error messages

3.4 Selection of validation rules

3.5 Improvement actions

3.6 Attribution of responsibilities


Deliverables: Validation levels

Same file

Level 0: Format & file structure

Level 1: Cells, records, file

Same dataset

From the same source

Within a domain

Between files

Level 2: Revisions and Time series

Within an organisation

Validation complexity


Between datasets

Level 2: Between correlated datasets

From different sources

Level 3: Mirror checks

Between domains

Level 4: Consistency checks

Between different organisations

Level 5: Consistency checks

deliverables typology of validation rules
Deliverables: Typology of validation rules

File Structure

>1 file checks


Referential integrity

File type

Code list





Time series

1 file checks

Revised data integrity

Model-based consistency


1n file checks



Allowed character







Guidelines for the allocation of responsibility, for the implementation of validation rules within the ESS based on an AGREEMENT Eurostat-NSI's with periodic performance revisions from both sides

  • Proposal for a generic business architecture of data validation:

Deliverables: Guidelines for the attribution of responsibility of validation activities in the whole production chain

Validation Controls – Different actors – Different responsibilities

Step 1

Step 2

Step 3

Step 4

Data preparation by the NSI's

Transmission of data and validation report

Loading data to production database

Additional processing & dissemination


Standard templates for error/warning messages and for validation report

Deliverables: Standard template for error/warning messages

    • Validation report structure:
    • Header
    • Time stamp
    • User ID
    • Data checked
    • (dataset name…)
  • Body
  • Rules applied
  • Total failures
    • No. errors
    • No. warnings
  • Total records
  • Records failed
  • Sum of weights
  • Maximum admissible error weight
  • Rate of acceptance
  • Maximum possible amount of error
  • Rate of performance
  • Footer
  • Error/warning messages
  • Error/warning message structure:
    • Rule ID
    • Severity
    • Rule type ID
    • Message text
    • Action
    • Failing data
deliverables vals validation syntax
Deliverables: VALS - Validation syntax

To define a meta-language for the domain of statistical data validation to express, document and communicate validation rules

Standard syntax for validation language

Trade-off between Human-understandable and Computer-parseable language

Implementation through Graphic User Interface to support business users to input and maintain validation rules and rule-sets

proposed approach
Proposed approach
  • Goals
  • Implementation of the methodological developments of VIP-V Phase I in the statistical domains/WGs
  • Maintenance and refinement of standards developed
  • User requirements for further developments
  • Evaluation, monitoring and reporting
proposed approach1
Proposed approach
  • Goals
  • Vertical integration of the micro data validation within the ESS production processes taking into account the results of the first phase of ESS VIP-V
  • Extension of the functional specifications to apply to micro data validation
  • Integrated solutions for micro data validation
proposed approach2
Proposed approach
  • Goals
  • Adaptation of existing validation tools to the functional specifications issued from ESS VIP-V Phase I
  • Deployment of validation solutions to MSs
    • Distribution of validation rules in agreed language
    • Building-Blocks in an adequate web services architecture
    • Provision of web services validation solutions to be used by Member States before transmission to Eurostat
proposed approach3
Proposed approach
  • Goals
  • Overall coordination of the project
  • Coherence of validation approaches within ESS
  • Implementation of the meta-language within ESS
  • Analysis of links with other VIP & ESS VIP projects
  • Good practices identification
  • More sophisticated validation solutions:
    • Longitudinal validation
    • Mirror checks validation
    • ESS wide shared final warehouses
elements in a validation system ess production chain
Elements in a validation system: ESS production chain


Member States

Statistical domain 1

Single Entry Point

Statistical domain …

Member States statistical production and validation

Validation Services

Web Inteface

Statistical domain n

  • Eurostat
validation service
Validation Service

Data Definition registry

Validation rules


  • Validation Service



Validation report


validation architecture elements global overview


Validation architecture elements – Global overview

Repository of rulesets and their metadata

Data Structure


SYNTAX specifications



Single Entry Point




current actions and next steps
Current actions and next steps
  • Assessment of Eurostat domains in the field of validation
  • Set of standard documentation for domain managers for harmonisation of communication with data providers
  • Task Force to:
    • Identify best practices in ESS
    • Advice on implementation in the ESS
    • Optimisation of the validation process
current actions and next steps1
Current actions and next steps
  • Functional specifications for Validation services (EDIT) to be accordingly adapted to the findings of the project
  • Tools development:
    • System to create/maintain a central repository of validation rules
    • Development and/or adaptation of IT Tools (EDIT, eDAMIS)
    • Validation Quality Metrics

Thank you

More information on:


Wiki (only from EUROSTAT):