1
GATE CSE 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider a table T in a relational database with a key field K. A B-tree of order p is used as an access structure on K, where p denotes the maximum number of tree pointers in a B-tree index node. Assume that K is 10 bytes long; disk block size is 512 bytes; each data pointer PD is 8 bytes long and each block pointer PB is 5 bytes long. In order for each B-tree node to fit in a single disk block, the maximum value of p is
A
20
B
22
C
23
D
32
2
GATE CSE 2004
MCQ (Single Correct Answer)
+2
-0.6
The order of an internal node in a B+ tree index is the maximum number of children it can have. Suppose that a child pointer takes 6 bytes, the search field value takes 14 bytes, and the block size is 512 bytes. What is the order of the internal node?
A
24
B
25
C
26
D
27
3
GATE CSE 2002
MCQ (Single Correct Answer)
+2
-0.6
A B+ - tree index is to be built on the Name attribute of the relation STUDENT. Assume that all student names are of length 8 bytes, disk blocks are of size 512 bytes, and index pointers are of size 4 bytes. Given this scenario, what would be the best choice of the degree (i.e. the number of pointers per node) of the B+ - tree?
A
16
B
42
C
43
D
44
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