Correlation

Correlation compares the key property values of a CI from one domain manager to another domain manager. CA Catalyst performs correlation and CA SOI, as a CA Catalyst consumer, can receive the correlated data from CA Catalyst. In CA Catalyst, correlation is based on one or more algorithms to achieve this mapping. You can adjust certain correlation criteria using additional semantics such as AND, OR, ANDIFEXIST, and NOT to modify the default rule. You can use the default rule, also named as PriorityListUSM, that better suits a solution.

Also, you can configure correlation to correlate across types that share a common base type. This results in one of the following:

In a derived CI type correlating to a base type, which indicates both are identical
In peers (children of the same base type) correlating, which is a multifunctional device (for example, a computer system acting as a router)

CA Catalyst supports relationship correlation that involves comparing source, target, scope, and semantics of a relationship with another CI from a different domain.

To correlate instances, the CA Catalyst infrastructure compares the following information from the USM schema:

Type (root element) of the instance
Correlation rule
Multi CI correlation inclusion rule
Equivalent element across types
Identifying name for the instance (the element, InstanceName)

Note: For more information about correlation, see the CA Catalyst documentation.