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Objectives
After reading this unit you should be able to:
imagery
explain in detail about crash recovery
what is bogus empowerment. And what is genuine empowerment
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
explain ANSI SPARC architecture
A Functional dependency is described by X Y between two groups of attributes Y and X that are subsets of R specifies a constraint on the possible tuple that can make a relation
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Eliminate Repeating Groups The problem is, "Find out the list of employees, who knows DB2". For this problem we require to perform an awkward scan of the list looking for re
1. Create the tables for the play-scheme database as specified in the TMA. 2. Enter the data as given in the spreadsheet. 3. Create queries to retrieve specified information
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
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