Industrial automation systems and integration —
Product data representation and exchange —
Part 1342:
Application module: Expression

1 Scope

This part of ISO 10303 specifies the application module Expression. The following are within the scope of this part of ISO 10303:

• the expressions definition that characterize its type (String, Numeric and Boolean);
• the constraints which ensure that an expression is semantically correct;
• functions that may be mapped on to the SQL query language.

The following are outside the scope of this part of ISO 10303:

• the assignment of values to variables within some context;
• the triggering mechanism that computes the value of an expression in a given context;
• the specification for an imaginary number;
• the specification for a natural number constant.

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