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Explain what is Aggregation ?
Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in the ER Model. This is shown by placing the relationship between two entities along with the entities in a box and setting up a relationship between this box and another entity.
Question 1: a) What is the difference between a non-impact and impact printer? b) Which type of printer is generally used in a supermarket to print your receipt? Describe
prototype of a distributed information system for a national car part retail outlet chain.
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
There are a number of possible solutions to the open ended brief. One of the simple ones is shown here without the PKs and FKs. It is important to think of how a number of tasks
Name the various privileges in SQL? A) Delete B) Select C) Insert D) Update
The primary key is selected from the
Adding Redundant Associations for Efficient Access Redundant associations do not add any type of information, therefore during design we should actually examine structure of o
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Explanation on Data Sharing?
The clause in SQL which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more columns is Ans : Order by
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