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Evaluate, compare and contrast the two methods of relational database design namely top down method and Bottom up method. What will be your choice if you are asked to select a method? Justify your choice.
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Define According to the levels of abstraction, the schema at the intermediate level is called Ans: As per to the levels of abstraction, the schema at the intermediate level is
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
What are the three data anomalies that are similarly to take place as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why n
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
Draw an ER diagram that shows the organization of a simple student database. The database captures the information about letter grades obtained by university students who enrolled
explaination
Normal 0 false false false EN-US X-NONE X-NONE
What is it ?
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
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