What is the difference between a join and an outer join operation?

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answerhappygod
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What is the difference between a join and an outer join operation?

Post by answerhappygod »

a) There is no difference
b) Join preserves a few tuples that are otherwise lost in the outer join
c) Outer join preserves a few tuples that are otherwise lost in the join
d) An outer join can be used only on outer queries whereas a join operation can be used in Subqueries
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