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Why is database design important?
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Give two profit of Reuse of Code. Reusing the implementation . Place existing class directly inside a new class. The new class can be made up of any number and type of the oth
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
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
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
What is Outer join? They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of w
Performance of Various Concurrency Control Mechanisms
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
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