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How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
Define canonical cover? A canonical cover Fc for F is a set of dependencies like F logically implies all dependencies in FC and Fc logically shows all dependencies in F.
Gyan Gurukul is a software company that provides software related solution. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan G
What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
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
Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
I want a good Microsoft Admin experienced in IIS and SQL Server. They require being able to set it up and administer from then onwards. Experience in Team Foundation Server a
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
what is er digram given that example of hospital,bank and library er digram.
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