Question

What does it mean for a relation to be definite from a particular direction (such as...

What does it mean for a relation to be definite from a particular direction (such as left definite)?

That item absolutely exists

That item predicts the item it is related to

That item can be predicted by the item it is related to

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Answer #1

`Hey,

Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.

OPTION B IS CORRECT

A relation is left-definite or left-total or injective if for values x,z the relation R has an output y i.e, R(x) = y and R(z) = y then this implies that x=z.

Kindly revert for any queries

Thanks.

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