A command that adds, deletes or modifies columns in an existing table is:
AAUDIT TABLE
BADJUST TABLE
CASSIGN TABLE
DALTER TABLE
Answer & Solution
Correct answer: D. ALTER TABLE
1. The table already exists.
2. Its column list needs changing.
3. That command is ALTER TABLE.
_Source: OpenStax Introduction to Computer Science, Chapter 8, Data Management._
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