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Benefits of Hashed file Organisation
1. Insertion or search on hash-key is quick.
2. Best if equality search is required on hash-key.
Drawbacks of Hashed file Organisation
1. It is a difficult file Organisation method.
2. Search is slow.
3. It suffers from disk space overhead.
4. Unbalanced buckets degrade performance.
5. Range search is slow.
In which format database schema is written ? Data base schema is written in the DDL format.
Describe the storage structure of indexed sequential files and their access method. Ans: Storage structure of Indexed Sequential files and their access: To achieve fast rand
Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
Have database built but having problems with some questions that go with the database
Distributed Database Management System
what is definition hierarchical data model
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
The Maximum no of key fields that can be used in a header is?? 50
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