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What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary.
Ans: View is a virtual table that does not consists of it own data it fetch the data from the original table.
Create view DEPT20 as select * from dept;
Where dno=20 group by dno;
Write the motivations led to development of OO-DBMS? 1. Programmer frustration with RDBMSs. 2. Requirement for special features.
cardnality ratio for humanresource mangement system
Is it mandatory to declare all the tables in Report by the key word tables for all the tables that exist in the structure of LDB, and are being explained in the Database part of LD
a project based on normalization with first, second and third normalization. There need to be a diagram also
triggering
A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
brief history,definition,current trends and future trends if any of data fragmentation
lock and types of lock
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