Extend classes and rules

  • Release version: Yokohama
  • Updated January 30, 2025
  • 1 minute to read

    • Extend and update CMDB CI Class Models store app classes and rules when using third-party integration tools.

    The CMDB CI Class Models app adds class models that extend the CMDB class hierarchy, including class descriptions, identification rules, identifier entries, and, if applicable, dependent relationships. You can use the added classes just like any other CMDB class. Applications such as Discovery and Service Mapping Patterns can use the class extensions to populate CIs and discover technologies and software.

    When using a third-party tool to integrate with ServiceNow apps, gaps can occur between the integration and different CIs. Some of the integrated tables and classes may be missing classes and rules that are not included with the CMDB CI Class Models store app.

    This section lists the classes that the CMDB CI Class Models store app adds or updates. The classes and rules in the following table enable you to add and extend the CMDB CI Class Models store app for integrations.

    See the full release notes for all CMDB CI Class Models.

    Table Extends Rules and related entries

    Postgresql Schema

    cmdb_ci_postgresql_schema

    		 cmdb_ci_db_catalog Containment rule:

    cmdb_ci_db_postgresql_instance->Contains:Contained By->cmdb_ci_postgresql_schema

    Identification Rule:

    Dependent, Attributes: name

    Related Entries (cmdb_related_entry):

    • Identifier: cmdb_ci_postgresql_schema
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    Information Object

    cmdb_ci_information_object

    		 cmdb_ci Identification rule:

    Independent, attributes: name

    Related Entries (cmdb_related_entry):

    • Identifier: cmdb_ci_information_object
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    Oracle Catalog

    cmdb_ci_db_ora_catalog

    		 cmdb_ci_db_catalog Related Entries (cmdb_related_entry):
    • Identifier: cmdb_ci_db_ora_catalog
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    MySQL Catalog

    cmdb_ci_db_mysql_catalog

    		 cmdb_ci_db_catalog Containment rule:

    cmdb_ci_db_mysql_instance->Contains:Contained By->cmdb_ci_db_mysql_catalog

    Identification rule:

    Dependent, attributes: name

    Related Entries (cmdb_related_entry):

    • Identifier: cmdb_ci_db_mysql_catalog
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    MS SQL Database

    cmdb_ci_db_mssql_database

    		 cmdb_ci_db_instance Related Entries (cmdb_related_entry):
    • Identifier: cmdb_ci_db_mssql_database
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    Sybase Catalog

    cmdb_ci_db_syb_catalog

    		 cmdb_ci_db_catalog Containment rule:

    cmdb_ci_db_syb_instance->Contains:Contained By->cmdb_ci_db_syb_catalog

    Identification rule:

    Dependent, attributes: name

    Related Entries (cmdb_related_entry):

    • Identifier: cmdb_ci_db_syb_catalog
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    DB2 Database (Before CMDB CI Class Models v1.67.0, the label (display name) was DB2 Catalog)

    cmdb_ci_db_db2_catalog

    		 cmdb_ci_db_catalog Containment rule:

    cmdb_ci_db_db2_instance->Contains:Contained By->cmdb_ci_db_db2_catalog

    Identification rule:

    Dependent, attributes: name

    Related Entries (cmdb_related_entry):

    • Identifier: cmdb_ci_db_db2_catalog
    • Related table: cmdb_key_value
    • Referenced field: configuration_item

    For the list of classes in the base system, including classes that this app might extend, see CMDB tables descriptions.