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Which operations need the participating relations to be union compatible?
A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatible.
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
Change the city of First Bank Corporation to ‘New Delhi' UPDATE COMPANY SET CITY = ‘New Delhi' WHERE COMPANY_NAME = ‘First Bank Corporation';
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
the of super market system done in database
explain exhausitively the problems associated with er diagrams with ellustrations
A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired
Which method of access uses key transformation? A Hash method of access uses key transformation.
what is multivalued dependency
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