CMDB classifications CMDB classifications are groups of configuration items (CIs) that share attributes and are stored in their own table. Classifications allow administrators to define the hierarchy of CIs within the CMDB. A CI class refers to the actual table name in the instance database. In that context, CI Type is a friendly name that a CI is known by, such as computer, router, or printer. As good practice, keep CI classifications as simple as possible. Configuration Management DatabaseThe Configuration Management Database (CMDB) is a series of tables that contain all the assets and business services controlled by a company and its configurations.CMDB tablesThe configuration management database (CMDB) employs the following tables.CI attributesAttributes apply to all of the CIs in a classification. To change attributes for a CI, you must extend the table and create a new classification for that CI.CMDB record typesThe CMDB contains the following major record types.Relationship rulesAny time you create a new classification (extend a table), you must create new relationship rules.Related Lists of CI componentsRelated Lists in CI records display additional components contained by that CI, such as disk drives on a server and the rules that control the behavior of a network router.Create CI classUse the CI Definition form view to create a new CI class (table) that is an extension of an existing CI class.Reclassify a CIYou can upgrade, downgrade, or switch the class of a CI by modifying its Class attribute. View table definitionsUse the CI Class Manager as a central location to explore tables and CI definitions, and to search through the CI class hierarchy. View the details of each table such as the table's label and field definitions, and all related definitions and scorecards.