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Objectives
After reading this unit you should be able to:
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
explain normalisation
what is union compatable?
Project: Microsoft Access You have been asked by the ABC Tanning Salon to create a database that can be used to track the salon's customers. You are to create a table in Access
What is SQL, and why is it important? SQL stands for Structured Query Language, and is the most significant data processing language in use today. It is not a complete programm
Describe the functions and features of foreign key? Foreign Key : The primary key of one file or table that is implanted in another file or table to implement the relationships
(a) What is a Sub-Query? (b) What is the difference between a scalar sub-query and a tabular sub-query? (c) Write an equivalent SQL statement to get the Name of Product wh
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
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