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Define the Attribute Inheritance
The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Namely, all the attributes of the higher level entity set are as well the attributes of the lower level entity set.
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
We face problem of stock Opening balance and closing balance in Minus
Explain Interfaces for parametric Users? Interfaces for Parametric Users - Parametric users, such as bank tellers, frequent have a little set of operations in which they must p
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest lev
How the time stamps are implemented Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the tra
Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui
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draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
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