15.00 - Hash Collisions - Teradata Database

Teradata Database Design

prodname
Teradata Database
vrm_release
15.00
category
User Guide
featnum
B035-1094-015K

Hash Collisions

The principal problem faced by hashing is hash collisions: situations in which the rowhash value for different rows is identical, making it difficult for a system to discriminate among the hash synonyms when one unique row is requested for retrieval from a set of hash synonyms.