Oracle
1Z0-052 · Question #183
1Z0-052 Question #183: Real Exam Question with Answer & Explanation
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Managing Schema Objects
Question
Which two statements are true regarding B-tree index? (Choose two.)
Options
- AThe leaf blocks in the index are doubly linked.
- BThe leaf node stores a bitmap for each key value.
- CThe rows with NULL value in key columns also have entries in the index.
- DThe deletion of a row from the table causes a logical deletion in index leaf block and the space
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Topics
#B-tree index#leaf block structure#NULL values#index deletion