Constraints in sql are used to define rules for the table and columns in a database and also make sure that data are accurate and trusted in the database. constraints are responsible for the ...

Is your feature request related to a problem? Please describe. MariaDB (starting with 10.2.1) and MySQL (starting with 8.0.16) have CHECK constraints, an integrity feature that is part of the CREATE ...

New research suggests that managers can innovate better by embracing constraints. Researchers reviewed 145 empirical studies on the effects of constraints on creativity and innovation, and found ...

* Issue #530: constraints on table prevents new record being added This adds a new dialog for adding records to a table. The current approach is broken for several cases where foreign keys and check ...

SQL CHECK Constraint syntax:- The following SQL creates a CHECK constraint on the "employee_Id" column. The CHECK constraint describe that the column "employee_Id" should only have values those are ...

Check constraints are supported in all of the major DBMS products, including DB2, Oracle, and SQL Server. But they are too-often ignored and not implemented in production databases. Properly defined, ...

I've got an interesting constraint I'm trying to add to our database. I can do with with triggers, but am curious if there is a more elegant way to do this in T-SQL (SQL2005, FWIW) We have two ...