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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
Advantages of Data Distribution The primary benefit of distributed database systems is the ability to access and share data in a reliable and efficient manner.
Set Difference If R1 and R2 are two union compatible relations or relations then result of R3 =R1- R2 is the relation that have only those tuples that are in R1 but not in R2.
coventions for displaying an ER schema as ER diagram
Transactions And Concurrency Management Introduction One of the main benefits of storing data in an integrated repository or a database is to permit sharing of it betwee
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Describe sequential file organization. Explain the rules for (i) Inserting a new record. (ii) Deleting an existing record. Ans:A sequential f
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
Explain the term- Query. Queries are used to repossess and show specific records in a table. They can also be used to show specific fields of specific records, which meet the co
Explain the dependency relationship of object oriented A dependency is a relationship which states that a change in specification of one thing can affect another thing, but n
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