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Determine the rule that a value of a foreign key should appear as a value of some particular table is called a Ans: Referential constraint. The rule that a value of a fo
What is conceptual model ? A conceptual model is a independent of both hardware and software.
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
What is a view in SQL? When can views be updated? A view is a virtual table which consists of columns from one or more tables. Through it is same to a table; it is stored in
What is DBMS and what are functions of DBMS? DBMS consist of collection of integrated data and set of program to admission those data. The functions performed by a typical
1.Why we need data mining? Give an example to illustrate your answer. 2. Why data mining is considered as "misleading name"? 3. Distinguish the difference between database an
Define the Canonical cover Ans: A canonical cover F c for F is a set of dependencies like F logically implies all dependencies in F c , and F c logically entails all dependen
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
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