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Explain the relevance of Data Dictionary in a Database System? Data dictionary is a database in its own right residing on the disk that consist of Meta data which is = Data abo
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What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Whst is logical schema ? Logical schema is the entire database.
Question: (a) Can a set of data requirements be correctly modelled by two or more different ER diagrams? Explain your answer. You may use a small example, if you think it will
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
Designing the fields in the data base The following are the considerations one has to remain in mind while designing the fields in the data base. Coding, compression, en
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Define union compatibility? Explain why INTERSECTION of two relations cannot be performed if they are not union compatible? Two relations R(A1, A2,-------, An) and S(B1, B2,--
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
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