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Command Line Interfaces: These are interactive interfaces, character-based that let you use the complete power and functionality of the DBMS query language directly. They permit you to manipulate the database and perform ad-hoc queries and see the results instantly. They are often the only method of exploiting the complete power of the database without making programs using a conventional programming language.
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
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.
explain participation constraints with examples
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
With the help of an example display how records can be deleted and updated in QBE. (i) Increase Pay_Rate of employees along with the skill of ‘cook' by 10%. (ii) Delete employee
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
example of bank
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
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
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
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