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LoginA ________ on an attribute of a relation is a data structure that allows the database system to find those tuples in the relation that have a specified value for that attribute efficiently, without scanning through all the tuples of the relation.
(a) Index
(b) Reference
(c) Assertion
(d) Timestamp
I got this question by my school principal while I was bunking the class.
This question is from SQL Data Types and Schemas in chapter SQL : Queries, Constraints and Triggers of Database Management
Database Management Sql : Queries in Database Management 3 years ago
Posted on 02 Dec 2021, this text provides information on Database Management related to Sql : Queries in Database Management. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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