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If one to many relation is possible in a data, but it makes a situation in which there is no repetition of primary and foreign keys, then will it be one to many or one to one? Anyone??
@@MathematicsTutor I think a circle is many to many. The a domain value x produces multiple y values and a range value y can be produced by multiple x values
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@@MathematicsTutor no sir, I meant suppose if a relation is one to many, can that relation btwn 2 sets have elements which also follow one to one relation?
Yes, it's a possibility that there can be some elements in the two sets that can have one to one relation but if we have even one relation of many to one or one to many then we don't call it a one to one relation.