This documentation supports the 9.0 version of BMC Atrium Core.

To view the latest version, select the version from the Product version menu.

CDM Definitions

It is important to understand what is a namespace in order to understand CDM definitions, as CDM definitions comprise a namespace and class name. A namespace (for example, BMC.CORE) serves as a label to identify classes that serve different purposes and serves also to create unique names. A namespace is prepended to the names of its class forms, though not its attribute fields. Therefore a class you create in one namespace can have the same name as an existing class in another namespace. However, attributes of the same class in different namespaces cannot share the same name.

You can partition your data model by using namespaces. Namespaces partition classes and attributes in the data model. This allows you to specify the provider or consumer of a certain type of data, or to make other arbitrary groupings. For instance, all classes in the Common Data Model are in the BMC.CORE namespace, and other classes provided by the BMC Atrium CMDB that hold information such as federated data definitions are in the BMC.CORE.CONFIG namespace.

Click here to view the class details for BMC.CORE, BMC.CORE.CONFIG, BMC.FED, and BMC.MAINFRAME namespaces.

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  1. George Klarmann

    Is this available in the offline zip file version as was v8.1 CDM?

    Sep 28, 2015 08:45
  2. Andreas Enocson

    The SystemEnvironment attribute is missing in the CDM.


    Feb 12, 2016 04:37
    1. Amol Redij

      Hi Andreas,

      Thank you for pointing that out.

      I will discuss with the concerned SME and update the page accordingly.



      Feb 15, 2016 11:10
    1. Amol Redij

      Hi Andreas,

      I have asked the concerned team to update the class attributes.



      Feb 22, 2016 01:47
  3. Ivan Pirishanchin

    The links under CMDB classes are not working anymore, I am always redirected to the webpage.

    Oct 11, 2017 06:54
    1. Nidhi Das

      Hello Ivan,

      Thanks for pointing out this issue. We have updated the topic.


      Oct 17, 2017 01:49