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Exam 1z0-071 topic 1 question 135 discussion

Actual exam question from Oracle's 1z0-071
Question #: 135
Topic #: 1
[All 1z0-071 Questions]

Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)

  • A. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
  • B. A column that is set to UNUSED still counts towards the limit of 1000 columns per table.
  • C. A DROP COLUMN command can be rolled back.
  • D. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
  • E. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
  • F. Partition key columns cannot be dropped.
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Suggested Answer: BDF 🗳️
by billysunday1 at March 23, 2024, 1:45 p.m.

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ShahedOdeh
4 months ago
Correct answers are B , D and F see : https://dbaclass.com/article/ora-12984-cannot-drop-partitioning-column/#google_vignette
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archit4321
8 months, 3 weeks ago
Selected Answer: BDF
Correct answers
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