CMDB CI Class Models app · SN Doc Reader

The CMDB contains base-system classes that store data about configuration items (CIs). The CMDB CI Class Models ServiceNow® Store app adds class models that extend the CMDB class hierarchy, including class descriptions, identification rules, identifier entries, and dependent relationships if applicable.

You can use the added classes like any other class. Applications such as Discovery and Service Mapping can use class extensions to populate CIs and to discover technologies and software.

See the release notes for all CMDB CI class models.

Related ServiceNow® Store apps and reference information:

Configuration Management database: A collection of class diagrams and class attributes for key CMDB classes.
CMDB tables descriptions: Descriptions of key CMDB tables in the base system.
Populating the CMDB: Information about the various options for populating the CMDB.
Discovery patterns: A ServiceNow Store app that provides a library of Discovery patterns for discovering specific devices and applications in the industry.
Service Graph Connectors: ServiceNow Store apps that provide predefined integrations for importing and integrating common third-party data into CMDB classes. Also includes the IntegrationHub ETL wizard for creating new ETL transform maps.

Add class models

The CMDB CI Class Models app adds classes, columns, and associated metadata as related records in the following tables:

CMDB Class Information [cmdb_class_info]: Class descriptions
Identifier [cmdb_identifier]: Identification rules
Identifier Entry [cmdb_identifier_entry]: Identification entries
CMDB Metadata Hosting Rules [cmdb_metadata_hosting]: Dependent relationships
CMDB De-duplication Task Lookup or Related item allowed classes [cmdb_duplicate_lookup_related_allowed_class]. For more information, see Detecting duplicate referenced CIs during lookup-based identification.

Discover using extension classes

The following table lists the software and technologies that applications can discover using the extension classes. It provides links to documentation for CMDB CI Class Models and the corresponding discovery patterns.

Software/Technology	CMDB CI Class Models Store app	Discovery patterns
Avi load balancer	Avi load balancer extension classes	Avi Vantage load balancer discovery
BYOL Model of RDS for Oracle	BYOL model of RDS for Oracle extension classes
Cassandra	Cassandra extension classes	Apache Cassandra database discovery
DNS resource records	DNS resource record classes
Firewall	Firewall extension classes
IBM Hardware Management Console (HMC)	IBM Hardware Management Console (HMC) extension classes	IBM Virtualization and Hardware Management Console discovery
Internet of Things (IoT)	Internet of Things (IoT) extension classes	N/A
Kong	Kong extension classes
Kubernetes	Kubernetes extension classes
Network Intrusion Detection System (NIDS)	Network Intrusion Detection System (NIDS) CI extension class
Nutanix	Nutanix extension classes	Nutanix Acropolis discovery
OpenStack	OpenStack extension classes	OpenStack resource discovery
Operational Technology (OT)	Operational Technology (OT) extension classes
Red Hat Virtualization (RHV)	Red Hat Virtualization (RHV) extension classes	Red Hat Virtualization discovery
Third-party integrations	Extend classes and rules for third-party integrations
Transport Layer Security (TLS)	Transport Layer Security (TLS) extension classes	Discovery procedures provided by Certificate Inventory and Management ServiceNow Store app
VMware NSX load balancer	VMware NSX load balancer extension classes	VMware NSX Advanced load balancer discovery

Request apps on the Store

Visit the ServiceNow Store to view all the available apps, and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the ServiceNow Store version history release notes.

Verify successful installation

After installing the CMDB CI Class Models app, make sure the classes were added successfully:

Navigate to All > Configuration > CI Class Manager.
Select Hierarchy to display the CI Classes list.

This list contains the added classes, such as the Nutanix classes.
Select a class to see the corresponding class details, identification rules, identifier entries, and dependent relationships, if applicable.

Warning: Uninstalling the CMDB CI Class Models app might compromise the integrity of the CMDB and result in unexpected behavior.

title	CMDB CI Class Models app
description	The CMDB contains base-system classes that store data about configuration items \(CIs\). The CMDB CI Class Models ServiceNow Store app adds class models that extend the CMDB class hierarchy, including class descriptions, identification rules, identifier entries, and dependent relationships if applicable.
locale	en-US
canonical_url	https://www.servicenow.com/docs/r/australia/servicenow-platform/cmdb-ci-class-models/cmdb-ci-class-models.html
release	australia
product	CMDB CI Class Models
classification	cmdb-ci-class-models
topic_type	concept
last_updated	2026-09-10
reading_time_minutes	5
breadcrumb	CMDB hierarchyExploreConfiguration Management Database \(CMDB\)Configuration ManagementExtend ServiceNow AI Platform capabilities