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What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
What is a data dictionary? A data dictionary is a data structure which keeps Meta data about the structure of the database i.e. the schema of the database.
what is query processing ,query optimization and performance turring?
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
Describe the definition of a transaction in SQL Ans: The SQL transaction starts implicitly. Transactions are finished by either Commit work that commits the transaction and st
properties of derirable decomposition
What do you mean by an execution plan? Why is it used? How will you view it? a.) An execution plan can be known as a road map which textually or graphically illustrates the dat
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