er-diagram, Database Management System

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Finkelstein methodology, PART MARKING: For this section, we will use part m...

PART MARKING: For this section, we will use part marking. This means we will supply model answers to all questions but we will only mark six questions. We will choose these randoml

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What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.

Group by clauses-data manipulation language, Group By clauses  • It is ...

Group By clauses  • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used

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What is use of generating such tables? How can you create temporary tables? When you require a table only for a short time after that you want it to disappear automatically you

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In an organisation various projects are undertaken. Each projects can employ one or more employees. Every employee can work on one or more projects. Each project is undertaken on

Modify - referential integrity, Update or Modify operation alters the exist...

Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op

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While sorting, if the main storage available is not enough, the system writes data to an external help file.  The SAP profile parameter, which determines DIR_SORTTMP

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Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs

Triggers and Stored Procedures, 10A.53 Code an Oracle Database trigger to e...

10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the delet

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