Table of Contents
- 1 Why are B+ trees preferred?
- 2 Why are B+ trees preferred over binary trees in databases?
- 3 Which of the following is true for B+ trees?
- 4 Under what situations B-tree indexes are preferable over binary search tree indexes?
- 5 What are the leaf nodes in a B+ tree Mcq?
- 6 What is the advantage of a B+-tree over a regular B-tree?
- 7 What is the height of the B-tree?
Why are B+ trees preferred?
Explanation: Disk access is slow and B+ Tree provide search in less number of disk hits. This is primarily because unlike binary search trees, B+ trees have very high fanout (typically on the order of 100 or more), which reduces the number of I/O operations required to find an element in the tree.
Why are B+ trees preferred over binary trees in databases?
B+- trees are preferred to binary trees in databases because Disk data transfer rates are much less than memory data transfer rates.
What is the main advantage of using B trees?
Advantages of B-tree usage for databases keeps keys in sorted order for sequential traversing. uses a hierarchical index to minimize the number of disk reads. uses partially full blocks to speed up insertions and deletions. keeps the index balanced with a recursive algorithm.
How does a B tree differ from a B +- Tree why AB +- tree is usually preferred as an access structure to a data file?
B+ tree has one root, any number of intermediary nodes (usually one) and a leaf node. Here all leaf nodes will have the actual records stored. Intermediary nodes will have only pointers to the leaf nodes; it not has any data.
Which of the following is true for B+ trees?
2. Which of the following is true? Explanation: The B+ -tree being a variation of B-tree allows rapid random access. In a B+ -tree the leaves are linked together, so it also provides rapid sequential access.
Under what situations B-tree indexes are preferable over binary search tree indexes?
B-tree is used when data is stored in disk whereas binary tree is used when data is stored in fast memory like RAM. Another area of application for B-tree is code indexing data structure in DBMS, in contrast, Binary tree is employed in code optimization, huffman coding, etc.
Which of the following is correct B trees are for storing data on disc and B trees are for main memory?
a)B-trees are for storing data on disk and B+ trees are for main memory. b)Range queries are faster on B+ trees. c)B-trees are for primary indexes and B+ trees are for secondary indexes. d)The height of a B+ tree is independent of the number of records,Correct answer is option ‘B’.
What are the advantages and disadvantages of B+ trees?
B Tree VS B+ Tree
SN | B Tree |
---|---|
2 | Data can be stored in leaf nodes as well as internal nodes |
3 | Searching for some data is a slower process since data can be found on internal nodes as well as on the leaf nodes. |
4 | Deletion of internal nodes are so complicated and time consuming. |
5 | Leaf nodes can not be linked together. |
What are the leaf nodes in a B+ tree Mcq?
What are the leaf nodes in a B+ tree? Explanation: The bottommost nodes that mark the end of a tree are known as the leaf nodes in a B+ tree. Explanation: Non leaf nodes are also known as internal nodes.
What is the advantage of a B+-tree over a regular B-tree?
This maximizes the branching factor of the internal nodes. This is the advantage of a B+-Tree over a regular B-Tree. Records can be fecthed in equal number of disk accesses. Height of the tree remains balanced and less compare to b-tree.
What are the advantages of recrecords over B-tree?
Records can be fecthed in equal number of disk accesses. Height of the tree remains balanced and less compare to b-tree. We can access the data stored in a B+ tree sequentially as well as directly . Keys are used for indexing. Faster search queries as the data is stored only on the leaf nodes.
What is B-tree in DBMS?
B-Tree is known as a self-balancing tree as its nodes are sorted in the inorder traversal. In B-tree, a node can have more than two children. B-tree has a height of logM N (Where ‘M’ is the order of tree and N is the number of nodes). And the height is adjusted automatically at each update.
What is the height of the B-tree?
B-tree has a height of logM N (Where ‘M’ is the order of tree and N is the number of nodes). And the height is adjusted automatically at each update.