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Explain outer join?
Outer Join - If there are any values in one table which do not have corresponding value(s) in the other, in an equi-join which will not be chosen. Such rows could be forcefully selected through using the outer join. The corresponding columns for in which row will have NULLs. There are actually three forms of the outer-join operation: left outer join ( X), right outer join (X ) and full outer join ( X ).
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
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FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
If the insertion violates one or more constraints, then two alternatives are available: Default option: - Insertion can be discarded and the reason of refusal can also be ex
how does Btree differ from a B+ - tree?
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