relational algebra, Database Management System

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what is union compatable?

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What are the advantages and disadvantages of using a database system. Sol. Advantages of Database System (DBMS) :  (1) Data Redundancy and Inconsistency: Since differen

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how to submit answers softcopy

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For each m:n relationship type R, we make a new table (say S) to represent R. We also contain the primary key attributes of both the participating entity types as a foreign key att

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What does data dictionary is a special file contains ? The data dictionary is a special file contain The name of all fields in all files.The width of all fields in all files an

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In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.

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