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Exam 1z0-051 topic 2 question 61 discussion

Actual exam question from Oracle's 1z0-051
Question #: 61
Topic #: 2
[All 1z0-051 Questions]

In which two cases would you use an outer join? (Choose two.)

  • A. The tables being joined have NOT NULL columns.
  • B. The tables being joined have only matched data.
  • C. The columns being joined have NULL values.
  • D. The tables being joined have only unmatched data.
  • E. The tables being joined have both matched and unmatched data.
  • F. Only when the tables have a primary key/foreign key relationship.
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Suggested Answer: CE 🗳️
You use an outer join to also see rows that do not meet the join condition.
Incorrect answer:

Ameet a join condition -

Bmeet a join condition -

Dmeet non join condition only -
Fdoes not take into consideration of primary key and foreign key relationship
Refer: Introduction to Oracle9i: SQL, Oracle University Study Guide, 4-17
by [deleted] at April 4, 2025, 7:09 a.m.

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