TheConfiguration Management Database (CMDB)inServiceNowstores information aboutconfiguration items (CIs)and theirrelationships. cmdb (Configuration Management Database)The main parent table for all CMDB-related data. Storescore configuration item (CI) data. Other CMDB-related tables inherit from this table. cmdb_ci (Configuration Items Table)Stores individual configuration items (CIs). Every CI (e.g., servers, network devices, software) is stored in this table or one of its child tables. This tableextendscmdb. cmdb_rel_ci (CI Relationships Table)Stores relationships between CIs. Defines how CIsconnect to each other(e.g., "server hosts application"). Helps withService Mapping and Impact Analysis. The Three Key CMDB Tables: A: omadb_rel_ciIncorrect- Not a standard ServiceNow CMDB table. B: sn_emdbIncorrect-sn_emdbisnot a CMDB tablein ServiceNow. C: sn_emdb_ciIncorrect- No such table inServiceNow CMDB architecture. E: sn_emdb_bakIncorrect- No suchbackup tablein ServiceNow CMDB. G: emdb_bakIncorrect- No suchServiceNow CMDB tableexists. Incorrect Answer Choices Analysis: ServiceNow Docs - CMDB Core Tables#CMDB Tables Overview ServiceNow Docs - Understanding CI Relationships#CMDB Relationship Tables Official ServiceNow Documentation References: