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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
Inheritance Adjustment As in object oriented analysis and design terms inheritance defines a relationship between classes, where as one class shares structure or behaviour def
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
What do you understand by a view? What does WITH CHECK OPTION clause for a view do? - A view is a virtual table which comprises fields from one or more real tables. - It is
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
example of bank
Explain the ACID properties of a transaction Ans: ACID properties are a significant concept for databases. The ACID stands for Atomicity, Consistency, Isolation, and Durability
Project Description: The work is about founding the best skilled person for the job. I will give you the job description. Skills required are Data Entry, Database Administrat
what benefit can a company gain by managing its own infrasture and services
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