Concurrency control in DBMS
What do you understand by the term concurrency control in DBMS?
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Concurrency control is the procedure of managing concurrent operations against a database so that database integrity is not adjusted. There are two approaches to concurrency control.
Pessimistic approach: consists of locking Optimistic approach: consists of versioning.
Illustrates the term normalization?
State various types of the input links within the data stage?
Explain in brief the term data warehouse.
hatcher also created the accompanying Level 1 data flow diagram for this process. Unfortunately, this DFD has numerous syntax and semantic errors. Identify the errors. Redraw the DFD to more correctly represent the receive supplier shipments process.
Illustrate the five SQL built-in functions.
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Describe briefly perform recovery?
Illustrates the term Merge Sort?
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Explain the way of establishing connection by ODBC.
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