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Write short notes on tuple relational calculus.
The tuple relational calculation is anon procedural query language. It defines the desired information without giving a particular procedure for obtaining that information.
Which of the operations constitute a basic set of operations for manipulating relational data? Relational algebra operations constitute a basic set of operations for manipulati
What are the uses of functional dependencies? To test relations to see whether they are legal under a given set of functional dependencies. To state constraints on the set
how many hourse have been spent on a certain project
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
what is the relationship between receipt and owner entities in computer sales and service company
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
What are the disadvantages of file processing system? The drawbacks of file processing systems are a) Data redundancy and inconsistency b) Complexity in accessing data
MySQL Database Merge Project Description: I have two databases, I need merge the data of one database into another Work to be done online right now. Payment can be done
Every School has many teachers and many students. Each student is assigned to one school and each teacher works for one school only. Each teacher teaches more than one subject but
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
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