The top level of the hierarchy consists of ____ each of which can contain ____.
2023
The top level of the hierarchy consists of ____ each of which can contain ____.
- A.
Schemas, catalogs
- B.
Schemas, environment
- C.
Catalogs, schemas
- D.
More than one of the above
- E.
None of the above
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Correct answer: C
In a database system, the hierarchy is structured as follows: Catalogs are the top-level containers. Each catalog can contain multiple schemas. Schemas, in turn, contain database objects like tables, views, and procedures. This hierarchical structure ensures organization and separation of database components.