August 26, 2024
Question 778 Given a block can hold either 3 records or 10 key pointers. A database contains n records, then how many blocks do we need […]
August 27, 2024
Question 292 In the context of databases SET concept is used in A Relational Model B Network Model C Hierarchical Model D Physical Model Database-Management-SystemTypes-of-databases-modelHCU PHD […]
August 27, 2024
Question 66 Consider the following three tables R, S and T. In this question, all the join operations are natural joins (⨝). (π) is the projection […]
August 27, 2024
Question 759 If R is a relation in relational data Model and A1,A2,..An are the attributes of relation R, what is the cardinality of R expressed […]
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