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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
Explain pipelining. Ans: In order to describe pipelining in simple terms, think of it as breaking down processor functions into smaller and smaller parts. For instance,
Describe the types of attributes? Types of attributes: An attribute's category determines the type of values that are permitted in the attribute. For instance, the value vers
Consider the table student and list names of students in the departments other than maths and computer. SELECT std_name FRM student WHERE dept_name NOT IN (‘Maths','Computer);
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
what is stracture of dabms
Objectives After Reading this part, you should be able to: Explain the term CONCURRENCY; Describe the term transaction and concurrent transactions; Talk about co
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
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