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When is UPDATE_STATISTICS command used? - When processing of large data is done, this command is used. - Whenever large number of modification, deletions or copy takes place
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.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Sub query in the UPDATE command : Example : //Double the commission for employees, who have got at least 2 increments. UPDATE EMP SET COMM = COMM * 2 WHERE
Define what Immediate database modification technique uses? Ans: Both undo and redo.
How do you find the final model after iterative analysis? Why is iterative analysis of any of the problem needed? The final model serves as the base for system architectur
What are the advantages of creating a table from existing table?
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
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