Discussion
In a B+ tree, the requirement of at least half-full (50%) node occupancy is relaxed for which one of the following cases?
Answer: A
The requirement is relaxed for only the root node.
A B+ tree of order n requires every node except the root to be at least half full. The root is exempt because a tree that has just been created, or that has shrunk after deletions, may hold very few keys: the root of a non-leaf tree needs only two children, and a root that is a leaf may hold a single key.
All leaf nodes and all internal nodes other than the root must meet the half-full rule, which is what keeps the tree balanced and its height logarithmic. Nothing special applies to the leftmost leaf.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development