Explanation:
choose rows from a table is SELECTION, Choose column from a table is PROJECTION Bring together data in different table by creating a link between them is JOIN. Incorrect answer :
1: answer should have SELECTION, PROJECTION and JOIN.
3: answer should have SELECTION, PROJECTION and JOIN.
4: answer should have SELECTION, PROJECTION and JOIN.
5: answer should have SELECTION, PROJECTION and JOIN.
Reference:
Introduction to Oracle9i : SQL, Oracle University Study Guide, 1-6

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