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Recent questions tagged relational-dbms
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repeted values in Relation Table
I want to know as we know codd's rule says that no two tuples in a relation should be same. i.e we can not have 2 tuples with same values in clm feilds. now to maintain these constraints, we choose to have some key over the relation ... having mutiset values, (as there are no keys present), how Dbms do indexing to retrive records? someone help me on this pls.
mohit chawla
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Jan 25, 2017
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mohit chawla
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databases
sql
relational-dbms
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