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I have to solve a problem using access
what is er digram given that example of hospital,bank and library er digram.
Problem : (b) A deductive database system is essentially the outcome of applying mathematics logic to database management, where logic is used for both data representation and
Whst is logical schema ? Logical schema is the entire database.
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
Describe Object Relational model ? Object Relational Model - This model combines the characteristics of both relational model and object oriented model. It extends the tradit
let us consider a table having 2200 records and the fixed size of the table to be considered as 25.then how many numbers of table is requredto perform horizontal fragmentation
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
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