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What is transaction?
Collections of operations that form a single logical unit of work are known as transactions.
Define multivalued dependency. What do understand by trivial multivalued dependency? Ans: A multivalued dependency is a full constraint among two sets of attributes in a rela
What is an E-R model? Draw an E-R Diagram for the company database with following Descriptions? The company is organized within departments. Each department has a unique name a
Which component is not included in database environment ? A users component is not included in database environment.
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Unrepeatable reads : Assume T7 reads X twice during its implementation. If it did not update X itself it could be very disturbing to see a dissimilar value of X in its next read. B
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
how can apply joins on table
What is NULL? Simply NULL means not in value.
Why do so various organizations use MySQL? Advantages: Open source Highly efficient Offers a high scalability in terms of size and connectivity. Highly prote
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.
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