What are the three key tables in an enterprise CMDO? Choose 3 angwers

`sn_cmdt_bak` is not a standard, key CMDB table.

`Sh_emdb_ci` appears to be a misspelling and is not a standard core CMDB table.

The `cmap_ret_ci` table (assuming it represents a specific table for 'returnable CIs' within the CMDB's model and part functionality) stores information crucial for tracking particular configuration items related to models and their lifecycle.

`cmdb_bak` is not a standard, key CMDB table in a production environment.

The `cmdb_ci` table is the foundational base table for all Configuration Items (CIs) in the CMDB, holding core attributes common to every CI.

`sh_eomdb` appears to be a misspelling and is not a standard core CMDB table.

The `cmap` table, typically referring to `cmdb_model_and_part`, is essential for managing product models, components, and parts, providing detailed information about the types and specifications of CIs.