对夹叶（Banjhi leaf）
对夹叶（Banjhi leaf）
相关考题：
The leaf， greyish green to brown green， thin fragile leaflets， lanceolate， mucronate， asymmetrical at the base.该叶的特征包括下列哪几项：（ ）。A．灰绿至棕绿色小叶B．叶片薄而易碎C．披针形叶D．卵圆形叶E．叶基不对称
在考生文件夹下CCTV文件夹中删除文件夹LEDER。(2)在考生文件夹下HIGER\YION文件夹中的文件ARIP.BAT重命名为FAN.FOR。(3)将考生文件夹下BOP\YIN文件夹中的文件FILE.WRI移动到考生文件夹下SHEET文件夹中。(4)将考生文件夹下GOREST\TREE文件夹中的文件LEAF.MAP设置为只读和存档属性。(5)在考生文件夹下XEN\FISHER文件夹中新建EAT文件夹。
Which two statements are true regarding B-tree indexs（）A、The leaf blocks in the index are doubly linked.B、The leaf node stores a bitmap for each key value.C、The rows with 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 index leaf block and the space becomesavailable for the new leaf entry
Which statement describes the effect on an index， when the indexed column for the rows is updatedin the base table（）A、An update in a leaf row takes place.B、The index becomes invalid after the update.C、The leaf block containing the row to be updated is marked as invalid.D、A row in the leaf block of the index for the key value is logically deleted and a new leaf row is inserted
Which two statements are true regarding B-tree index（）A、The leaf blocks in the index are doubly linked.B、The leaf node stores a bitmap for each key value.C、The rows with 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 index leaf block and the space becomes available for the new leaf entry.
多选题Which two statements are true regarding B-tree index（）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 becomes available for the new leaf entry.
多选题Which two statements are true regarding B-tree indexs（）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 becomesavailable for the new leaf entry