Building the Action Diagram › How to Define Logic for Elementary Processes and Procedures › Add Entity Actions › Create Entity Actions in the Action Diagram › Specify System Conditions

Specify System Conditions

The third part of specifying selection conditions for a READ statement is to specify any system conditions. You first specify the system value of the entity being read. CA Gen supplies four system values:

• User ID
• Printer terminal ID
• Terminal ID
• Transaction code

You then specify the relational operator and complete the expression by qualifying any entity action view attributes. You specify any character attributes, character strings, or spaces.

The following example of a READ statement contains a system condition for terminal ID:

READ library
WHERE TERMINAL ID IS EQUAL TO DESIRED library terminal_id