Contents

• Introduction
• The OPM Query Language
  • Select Queries
    • Semantics in Relational Model Terms
    • Expressions
    • Select Expressions and Select Statements
    • Conditions
  • Syntactic Extensions and Shorthand Notations
    • Path Expressions
    • Implicit Variable Declarations
    • More Implicit Variables
    • Tuple Attributes
  • Insert Queries
  • Delete Queries
    • Examples.
  • Update Queries
    • Examples.
• Query Processing Strategies
  • Processing Select Queries
    • Method Based Query Processing
    • Query Rewriting
    • Iterative Query Processing
  • Processing Update Queries
• The OPM Query Translator
  • Query Plan Features
    • Execution Options
    • Projections
    • The Translator for a specific DBMS
  • Metadata
  • Modules
  • Using the OPM Query Translator
    • Creating an OPM Database
    • Preparing Metadata
    • Using the OPM Query Translator
• References
• An OPM Example Schema
• Syntactic Definition for the OPM Query Language
• OPM Query Examples Expressed on GDB 6.0
  • Query 1.
  • Query 2.
  • Query 3.
  • Query 4.
  • Query 5.
  • Query 6.
  • Query 7.
• About this document ...