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The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
What are the two types of errors? The two types of errors are: a) Logical error b) System error
Why a report generator is used ? Report generator is used for print files on paper.
Define the Division Operation of Relational Algebra Let R be a relation comprising attributes (A1,...Ap,Ap+1,...An) and S comprising attributes (Ap+1,...An) DEF: Division
write on the various type of relationalkey
what is cascading? what is rollback cascading? please explain in detail
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
Question 1 What is data mining? Write Data Mining applications Question 2 What is OLAP? Write the benefits of OLAP Question 3 What is Business Intelligence? Explai
Problem 1. Write the SQL queries using Data Manipulation Language (DML) statements. Insert values into student table with field names using insert command Display the
Dependency Preservation It is obvious that the decomposition must be lossless so that we do not lose any information from the relation that is decomposed. Dependency preservati
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