Sentence examples for check constraint from inspiring English sources

The node c corresponds both to a parity check constraint between LDPC symbol nodes ((v_{1},dots,v_{d})) and to an RS linear constraint between all the symbol-nodes ((v_{1},dots,v_{d},e_{1,c},dots,e_{e(c),c})).

While a DML WHERE clause must evaluate to True for a row, a check constraint must not evaluate to False.

The NOT NULL constraint is semantically equivalent to a check constraint with an IS NOT NULL predicate.

This means that a check constraint will succeed if the result of the check is either True or Unknown.

A check constraint placed on a column operates under a slightly different set of rules than those for the DML WHERE clause.

The following example table with a check constraint will prohibit any integer values from being inserted into column i, but will allow Null to be inserted since the result of the check will always evaluate to Unknown for Nulls.

The Monte Carlo method is used to estimate superposing areas in order to check constraints and to evaluate the objective, which measures the superposition of accident effect areas onto population polygons.

The primary place in which SQL three-valued logic intersects with SQL Data Definition Language (DDL) is in the form of check constraints.

By default check constraints against foreign keys succeed if any of the fields in such keys are Null.

Because of the change in designated values relative to the WHERE clause, from a logic perspective the law of excluded middle is a tautology for CHECK constraints, meaning CHECK (p OR NOT p) always succeeds.

LDPC codes are also effectively described in a graphical way through a Tanner graph [15], where each bit in the codeword is represented with a circle, known as variable-node (VN), and each parity-check constraint with a square, known as check-node (CN).