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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
what do you mean by consistency in rdbms?
What is the difference between a HAVING CLAUSE and a WHERE CLAUSE? HAVING CLAUSE - HAVING CLAUSE is used only with SELECT statement. - It is normally used in a GROUP BY
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
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
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
Which component is not included in database environment ? A users component is not included in database environment.
In Database software have only pure security or some dis secured by administrator?
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
entity relationship diagram for online examination system
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
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