Chapter 4 Building Physical Diagrams

Attaching an expression to a business rule in a PDM

A business rule typically starts out as a description. As you develop your model and analyze your business problem, you can complete a rule by adding a technical expression. The syntax of expressions depends on the target database.

Each business rule can include two types of expression:

• Server - can be generated to a database. You can generate server expressions as check parameters if they are attached to tables, domains, or columns
• Client - used mainly for documentation purposes. However, you can insert both types of expression into a trigger or a stored procedure

To attach an expression to a business rule in a PDM:

1. Open the business rule property sheet and click the Expression tab.
2. Enter a server or client expression on the appropriate sub-tab.
3. Click OK in each of the dialog boxes.

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