The Computed attribute type can be used to display the result of a calculation of multiple attributes. It can be thought of as a "stored procedure" (Stored procedure - Wikipedia). The calculation is defined according to Path Query expressions in SystemWeaver.

Users are provided with an attribute editor that will display the calculated value.

When creating an attribute of type Computed, the only requirements are a SID and a Name. 

Valid Data Dimension(s): Single

Support for Default Value: No

Allows Empty Value: No

Configurable Editor: Width only

Path

Enter the SystemWeaver path expression that defines the computed attribute value. Refer to the Path Query Language Reference Manual in the application Help for information about path expressions.

Example

Things to Consider

• Computed attributes never store values.
• Values cannot be changed or cleared since they are simply displaying the result of a calculation. 
• Changing an attribute type to or from the Computed type is not supported.