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Database Recovery And Security Introduction In this part we will introduce two main issues relating to database management systems. A computer system suffers from dissi
Designing the fields in the data base The following are the considerations one has to remain in mind while designing the fields in the data base. Coding, compression, en
What benefits can a company gain by managing its own information infrastructure and servicea
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
A constraint named less_than_20 was defined on the field date_of_birth of table student. Delete this constraint. ALTER TABLE student DROP CONSTRAINT less_than_20;
Explain the cartesian product in Database Management System
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary. Ans: View is a virtual table that does not consist
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
limitations and benefits in database tecknowlagy
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