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List the string operations supported by SQL?
1) Pattern matching Operation
2) Concatenation
3) Extracting character strings
4) Converting among uppercase and lower case letters.
Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
What is the use of RAID? A variety of disk-organization methods, collectively called redundant arrays of independent disks are used to better the performance and reliability.
What are the various properties of Relational tables? Relational tables have 6 properties: 1. Each row is unique. 2. Column values are of the same kind. 3. Values are
how can apply joins on table
What are the ways in which the variable-length records arise in database systems? Storage of many record types in a file. Record types that permit variable lengths for one o
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
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);
What is NULL? Simply NULL means not in value.
Problem Explain at least five relational algebraic operators with a suitable example. Note: All the above descriptions should be done by taking at least two examples from ou
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