User Manual

• Foreword
• Introduction
  • Structure of the document
• General characteristics of the VTL
  • User orientation
  • Integrated approach
  • Active role for processing
  • Independence of IT implementation
  • Extensibility, customizability
  • Language effectiveness
• Evolution of VTL 2.0 in respect to VTL 1.0
  • The Information Model
  • Structural artefacts and reusable rules
  • The core language and the standard library
  • The user defined operators
  • The VTL Definition Language
  • The functional paradigm
  • The operators
  • Changes for version 2.1
• VTL Information Model
  • Introduction
  • Generic Model for Data and their structures
    • Data model diagram
    • Explanation of the Diagram
    • Functional Integrity
    • Examples
    • The data artefacts
  • Generic Model for Variables and Value Domains
    • Variable and Value Domain model diagram
    • Explanation of the Diagram
    • Relations and operations between Code Items
    • Conditioned Code Item Relations
    • The historical changes
    • The Variables and Value Domains artefacts
  • Generic Model for Transformations
    • Transformations model diagram
    • Explanation of the diagram
    • Examples
    • Functional paradigm
    • Transformation Consistency
• VTL Data types
  • Data Types overview
    • Data Types model diagram
    • Explanation of the diagram
    • General conventions for describing the types
  • Scalar Types
    • Basic Scalar Types
    • Value Domain Scalar Types
    • Set Scalar Types
    • External representations and literals used in the VTL Manuals
    • Conventions for describing the scalar types
  • Compound Data Types
    • Component Types
    • Data Set Types
    • Product Types
    • Operator Types
    • Ruleset Types
    • Universal Set Types
    • Universal List Types
• VTL Transformations
  • The Expression
  • The Assignment
  • The Result
  • The names
    • The artefact names
    • The environment name
    • The connection to the persistent storage
• VTL Operators
  • The categories of VTL operators
  • The input parameters
  • The invocation of VTL operators
  • Level of operation
  • The Operators’ behaviour
    • The Join operators
    • Other operators: default behaviour on Identifiers, Measures and Attributes
    • The Identifier Components and the Data Points matching
    • The operations on the Measure Components
    • Operators which change the basic scalar type
    • Boolean operators
    • Set operators
  • Behaviour for Missing Data
  • Behaviour for Attribute Components
    • The Attribute propagation rule
    • Properties of the Attribute propagation algorithm
• Governance, other requirements and future work
  • The governance of the extensions
  • Relations with the GSIM Information Model
    • Data Sets and Data Structures
    • Value Domains
    • Transformation model and Business Process Model
• Annex 1 – EBNF
  • Properties of VTL grammar

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