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Which two statements cause changes to the data dictionary?
Correct Answer: B,D
The data dictionary is a read-only set of tables that provides information about the database. Certain operations that modify the database structure will cause changes to the data dictionary: Option B: GRANT UPDATE ON scott.emp TO fin_manager; Granting privileges on a table will change the data dictionary as it records the new privilege. Option D: TRUNCATE TABLE emp; Truncating a table affects the data dictionary because it removes all rows from a table and may also reset storage parameters. Options A, C, and E do not cause changes to the data dictionary: Option A is incorrect because the DELETE command modifies data, not the data dictionary structure. Option C is incorrect because altering a session parameter does not change the data dictionary; it is a temporary change for the session. Option E is incorrect because a SELECT query does not change the database, it just retrieves information.