1Z0-497 Web TestEngine demo

Select all that apply.

• A

  The leaf blocks in the index are doubly linked.

• B

  The leaf node stores a bitmap for each key value.

• C

  Rows with a NULL value in key columns also have entries in the Index.

• D

  The deletion of a row from the table causes a logical deletion in the index leaf block and the space becomes available for a new leaf entry.