10 Questions
What is the process of mapping a key value directly to the storage location without using indices called?
Hashing
What is the usual method of direct mapping in direct file organisations?
Performing arithmetic manipulation of the key value
What is the term used for the situation when two or more distinct key values are mapped to the same value in hashing schemes?
Collisions
How are colliding records usually handled in hashing schemes?
Assigned to an overflow area
What is the purpose of using the hash function to generate a value that is the address of a bucket where the pair values of records are stored?
Handle limited collisions and re-organizations without affecting the hash function
What is the term used to describe the situation when two or more distinct key values are mapped to the same value in hashing schemes?
Collision
What is the purpose of using the hash function to generate a value that is the address of a bucket where the pair values of records are stored?
To efficiently locate the storage location of records
What is the usual method of direct mapping in direct file organisations?
Performing arithmetic manipulation of the key value
How are colliding records usually handled in hashing schemes?
Assigned to the next available free space or an overflow area
What process is called when a key value is mapped directly to the storage location, avoiding the use of indices?
Hashing
Test your knowledge of database management systems with this quiz question on hash files. Learn about different file organizations and their impact on mapping search key values to storage locations.
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