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Key pages will redirect to the new domain on May 26, 2026. However, some legacy documentation links will not be redirected. 

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Managing the common data model

The Common Data Model (CDM) of the BMC Helix CMDB unifies the representation of configuration data. It stores information about the most common configuration items, such as hardware, software, and services. The CDM provides a mechanism for linking CI information to provide a complete view of all elements of an IT environment and the manner in which these CIs affect each other.

 

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Reference

View the version-wise changes made to the attributes and classes in the CDM. 

Learn about the key concepts related to the CDM, such as terminology, hierarchy, attribute inheritance, and extensibility.

Understand the best practices before you modify the CDM. 

See a list of high-level classes in the CDM and their descriptions.

Get an overview of how the CIs and relationships in the CDM are represented through a service model.

 

 

 

 

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BMC Helix CMDB 26.2