Siebel Personalization Administration Guide > Targeting Content by Using Expressions >

About Expressions and Expression Types

Expressions set the basic parameters for controlling the content to users. You can create expressions by entering the expression as text in the appropriate field or by using the Personalization Business Rules Designer.

The types of expressions are:

• Conditional Expressions
• Search Expressions

About Building Expressions

Expressions are written in Siebel Query Language entered as text. You build expressions from the following basic elements:

• Functions.
• Operators
• Profile attributes
• Business component fields

For more information on these elements, see Personalization Business Rules Designer Contents.

Creating Expressions

To create expressions you can either:

• Enter the expression as text directly in the expression field, or
• Click the icon in any selected expression field to launch the Personalization Business Rules Designer.

The maximum size for any expression (conditional, include, exclude, and business service context) is 4096, which is limited by the database configuration.

For more information on:

• Creating expressions using the Personalization Business Rules Designer, see About the Personalization Business Rules Designer.
• Siebel Query Language, see Operators for Building Condition Expressions which details the formulas and operators available.