Discussion
Because it contains a description of its own structure, a database is considered to be ________ .
Answer: C
Correct answer: self-describing
A database stores metadata - the definitions of its own tables, columns, keys and indexes - alongside the user data, in system tables that can be queried like any other. That is what makes it self-describing, and it is why a tool can connect to an unfamiliar database and discover its structure without being told.
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