Which two are true when updating a table's index key columns?

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is marked as logically deleted

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is updated and remains in the same location in the same block、A leaf row is always inserted into the same block from where a leaf row was deleted、A leaf row is delete

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is updated and remains in the same location in the same block、A leaf row is always inserted into the same block from where a leaf row was deleted

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is updated and remains in the same location in the same block、A leaf row is delete

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is updated and remains in the same location in the same block

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is always inserted into the same block from where a leaf row was deleted、A leaf row is delete

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is always inserted into the same block from where a leaf row was deleted

选择了： leaf row is inserted such as to maintain the collating sequence of the index、A leaf row is delete

选择了： A leaf row is always inserted into a different block from where a leaf row was deleted、A leaf row is marked as logically deleted、A leaf row is updated and remains in the same location in the same block、A leaf row is always inserted into the same block from where a leaf row was deleted、A leaf row is delete

选择了： A leaf row is always inserted into a different block from where a leaf row was deleted、A leaf row is marked as logically deleted、A leaf row is updated and remains in the same location in the same block、A leaf row is always inserted into the same block from where a leaf row was deleted