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Which method is used to key transformation ?
A hash method is used to key transformation.
what is correlation in nested query
The participation Constraints shows whether the existence of an entity depends on its being associated to another entity by the relationship type. There are two kinds of participat
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
define locking in simple language and decribed it
Explain the θ-join and equijoin Refer tables Car and Boat which list models of cars and boats and their relevant prices. Assume a customer wants to buy a car and a boat, but sh
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
Explain ER Relationship model? An entity-relationship model (ERM): An entity-relationship model (ERM) is an abstract theoretical illustration of structured data. Entity-relatio
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
discuss the purpose of the concurrency control?
Question: Using the data model express the following queries in SQL. (a) Create the Table named "Cinema" and make the cinema_code to be the primary key of the relation and
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