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It prevents certain types of inconsistent data values from being entered.It assign a row(s) nullable values.It assign a column(s) duplicate data values from being entered.None of above

Q: What is the function of constraint?

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Yes. If the feasible region has a [constraint] line that is parallel to the objective function.

Some synonyms for constraint are limitation, restriction, and confinement.

One. To be a (non-trivial) linear programming problem both the objective function and the constraints must be linear. If there were no constraints then the objective function could be made arbitrarily large or arbitrarily small. (Think of a line in two-space.) By adding one constraint the objective function's value can be limited to a finite value.

Dealing with engineering or CAD, a geometric constraint deals with constraints such as parallel or perpendicularity. A numeric constraint deals with distances and size. Width, length, and depth are examples of these.--------Geometric constraints are constant, non-numerical relationships between the parts of a geometric figure. Numeric constraints are number values, or algebraic equations that are used to control the size or location of a geometric figure :)

* In NOT NULL constraint the particular data cannot be NULL,* In UNIQUE constraint the same thing cannot be repeated, it must be unique,* The primary key is simply the combination of both these constraints.

Related questions

If there is a shadow price of zero it means it is a non binding constraint and the RHS of the constraint can be changed up to the allowable increase or decrease without changing the value of the objective function.

Yes. If the feasible region has a [constraint] line that is parallel to the objective function.

A binding constraint is a restriction that must be satisfied for a system to operate properly. It is a limit or condition that cannot be exceeded without risking negative consequences. In other words, it is a rule or requirement that must be followed to ensure the functionality or integrity of a system.

A constraint which is not required or is extra, presence or absence of such a constraint does not effect the solution of problem

what is social design constraint

column constraint is for a single column. table constraint is for an entire table.

A constraint

Thailand is facing land constraint

Tweezer constraint

Tweezer constraint

Geometric Constraint, Parametric Constraint, and Assembly Constraint

A constraint is a limitation that is visible and present. The difference between a constraint and risk is that a risk is problem that is not yet seen, or a potential problem.