Component relationships

Service management relationships are impact relationships.

Note

Relationships that qualify as impact relationships by setting HasImpact=Yes are considered or used by the cell.

The following table lists the main relationship classes that can qualify as impact relationships. These classes have been derived from BMC_BaseRelationship instances. 

Main relationship classes

Class name

Class description

BMC_Impact

The BMC_Impact relationship, and the subclasses that derive from this class are used to define service impact relationships between CIs.

Note

The BMC_Impact class has been deprecated by BMC Atrium CMDB. To show the impact between CIs by using an attribute on the relationship, rather than creating a new relationship:

  • To represent impact as an attribute on the same relationship between the CIs, set HasImpact=Y on the relationship.
  • If there is an impact between the CIs without an actual relationship between the CIs, a new impact relationship can be created by using BMC_BaseRelationship withHasImpact=Y andName=ImpactOnly.

 

BMC_Dependency

BMC_Dependency describes component relationships that are dependent on each other. This is different from impact relationships in that a dependency can be at a lower, direct level, while an impact is often at a higher, more indirect level.

BMC_Component

BMC_Component is used to define composite objects. One key component relationship in the CMD is between the system and system component classes. This relationship defines a composite computer system, which is made up of a computer system instance and subinstances of disk drives, monitors, software, network cards, and so on.

BMC_MemberOfCollection

BMC_MemberOfCollection is used to define groupings of instances in a logical manner. It is used to define the network topology or the set of CIs that make up a business process or service.

BMC_ElementLocation

BMC_ElementLocation associates  ManagedElement with a Location for positioning, inventory, maintenance, and similar purposes.

 

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