Custom CMDB class tables should begin with u_cmdb_ci . The u_ portion identifies a customer-created table, while cmdb_ci preserves the standard CMDB naming convention and clearly indicates that the table extends the Configuration Item hierarchy.

For example, appropriate custom class names may resemble u_cmdb_ci_custom_router or u_cmdb_ci_special_switch. The uploaded guide uses these exact naming patterns when discussing custom-class consolidation and the technical debt created by unnecessary custom classes.

Using only cmdb_ci would incorrectly suggest an out-of-box ServiceNow table. Prefixes such as u_ci_cmdb and ci_cmdb do not follow the standard hierarchy convention. Before creating any custom class, the administrator should still verify that a suitable supported class is not already available through the CMDB CI Class Models application.

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