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Which element in the database can modified by changing the data dictionary? Data elements in the database can be changed or modified through changing the data dictionary.
what is query processing?
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
Scenario 1: Power goes out after the first instruction. What happens?
what is correlation in nested query
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Events4Fun is an event management company in Europe with branches in South America as well. The company is well-known for its efficiency, good-quality services, and affordable char
Explain view in RDBMS? View - A view is a relation (virtual rather than base) and could be used in query expressions, which is, queries can be written by using the view as a re
what is relationship inheritance and attribute inheritance
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