New posts in Constraints

'invalid for creating a default constraint' error when trying to add a constraint to an existing table

Postgresql: Conditionally unique constraint

What is the difference between Primary Key only and Primary Key constraint?

Imposing constraints or restrictions on method body, in Java

Postgres constraint ensuring one column of many is present?

Adding named foreign key constraints in a SQL Create statement

How to remove constraints from my MySQL table?

Prolog Constraint Processing : Packing Squares

PSQLException: ERROR: null value in column violates not-null constraint

How to add a positive integer constraint to a integer column in MySQL?