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Introduction Suppose we have written a procedure to perform an arithmetic division. The procedure will input two numbers and they are di... -
Introduction We have seen what ER diagram is and what its basic concepts are. Now let us see how to draw the ER diagram using these conc...
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Before understanding what is data backup and how is it recovered, let us see a brief about storage structure in the computer system. Sto... -
Deadlock Suppose we are executing a set of transactions in the database. Let us assume the transaction as updating the address of an empl...
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Relational Calculus Relational calculus is a non procedural query language. It uses mathematical predicate calculus instead of algebra. ...
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Apk Mirror Part of the benefits of having an Android device is being able to install an app on it. Installing is as simple as one, two, th...
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Select Operation (Query) We have already seen the very basics of SELECT command. Basically it is used to retrieve the data from the data...
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Introduction So far we have seen what a database is, what is the features of database, how to gather requirements and how to put them in...
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Fifth Normal Form (5NF) A database is said to be in 5NF, if and only if, It's in 4NF If we can decompose table further to elimina... -
Introduction Suppose we are updating the marks in the STUDENT database for some of the students after re-evaluation. When we are updatin...
