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What is the Difference between relation schema and relation instance?
difference between relation sehema and relation instance in dbms
Differentiate a relation to a function?
A function is a special type of relation. So first let's see what a relation is. A relation is a diagram, equation, or list that defines a specific relationship between groups of elements. Now a function is a relation whose every input corresponds with a single output.
What is a mere relation?
A relation is an expression that is not a function. A function is defined as only having one domain per range, meaning that when graphed, a function will have no two points on the same vertical line. If your expression is graphed and two points do appear on the same vertical line, it is a relation, not a function.
Can you have a function that is not a relation?
No, a function must be a relation although a relation need not be a functions.
A production function measures the relation between?
The production function is a unit of measurement used in economics. The function measures the relationship between the quantities of productive factors and the amount of product obtained.
