80 | DBMS | Indexing | GATE Question on Primary Indexing | B+ Trees | Examples
Question:
Consider a database of fixed-length records, stored as an ordered file. The database has 25000
records, with each record being 100 bytes, of which the primary key occupies 15 bytes. The data file is block-aligned in that each data record is fully contained within a block. The database is indexed by a primary index file, which is also stored as a block-aligned ordered file. The figure below depicts this indexing scheme.
Suppose the block size of the file system is 1024 bytes, and a pointer to a block occupies 5 bytes. The system uses binary search on the index file to search for a record with a given key. You may assume that a binary search on an index file of b blocks takes log b block accesses in the worst case.
Given a key, the number of block accesses required to identify the block in the data file that may contain a record with the key, in the worst case, is _____________.
Master the concept of primary indexing with this detailed tutorial focused on solving GATE problems. Learn through practical examples and enhance your understanding of database indexing to excel in your exams.
🔍 What You'll Learn:
Primary Indexing Basics: Understand the fundamentals of primary indexing and its significance in database management.
GATE Problem Solving: Dive into specific GATE exam questions on primary indexing and learn step-by-step solutions.
Practical Examples: Work through examples to see how primary indexing is implemented and utilized for efficient data retrieval.
Key Formulas and Techniques: Get familiar with the essential formulas and techniques used in primary indexing problems.
📚 Why This Video Matters:
Primary indexing is a crucial topic in database management, especially for GATE exam preparation. This tutorial provides you with the knowledge and problem-solving skills needed to tackle indexing questions confidently.
💡 Who Should Watch:
Students preparing for GATE and other competitive exams in computer science.
Database administrators and developers looking to deepen their understanding of primary indexing.
Anyone interested in learning about database indexing and its practical applications.
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