Reference number
ISO 13584-20:1998
© ISO 2024
International Standard
ISO 13584-20:1998
Industrial automation systems and integration — Parts library — Part 20: Logical resource: Logical model of expressions
Edition 1
1998-07
Read sample
Published (Edition 1, 1998)
This publication was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 13584-20:1998

Language
Format
CHF 216
Convert Swiss francs (CHF) to your currency

Abstract

This part of ISO 13584 specifies:

— an EXPRESS schema for generic expressions;

— an EXPRESS schema for expressions, that models the subset of the allowed expressions in the EXPRESS language defined in ISO 10303-11 that corresponds to integer, real, Boolean and string data types. This schema uses the resources defined in the generic expression schema.

The following are within the scope of this part of ISO 13584:

— the exchange of expressions that involve both constants and variables;

— the function that checks whether or not a numeric expression should evaluate to an integer value;

— the constraints which ensure that an expression is semantically correct;

— the computation of the variables or functions used in an expression;

— the function that checks if an expression may be mapped on to the SQL query language. The following are outside the scope of this part of ISO 13584:

— the assignment of values to variables within some context;

— the triggering mechanism that computes the value of an expression in a given context.

General information

  • Status
     : Published
    Publication date
     : 1998-07
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 87
  • Technical Committee :
    ISO/TC 184/SC 4
    ICS :
    25.040.40 
  • RSS updates

Add to cart this standard

Cover page: STEP Module and Resource Library (SMRL) v11
STEP Module and Resource Library (SMRL) v11
This collection is a standard for the exchange of product model data (STEP) module and resource library (SMRL). It is intended for those who are considering adopting ISO 10303 modular application protocols, application modules, and resource parts, or systems built on them, for product data representation …

Life cycle

Got a question?

Check out our Help and Support

  2. Store
  3. Standards catalogue
  4. ICS
  5. 25
  6. 25.040
  7. 25.040.40
  8. ISO 13584-20:1998