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Hierarchical model is also known by?
A hierarchical model is also known as a Tree structure.
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
average response time?
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
how map binary relation one to one
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
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
Problem 1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples 2 Explain the following performance tuning techn
What is a data dictionary? Data Dictionary is a main source of data in a data management system. Its major function is to carry the creation and management of data definition
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
Most computer systems authenticate users by asking them for the user name and password. However, the user names and passwords often can be guessed by hackers. Suggest an automated,
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