Learn sql-script: how to write alter statements to set primary key on an existing table? with practical examples, diagrams, and best practices. Covers sql, sql-server, sql-server-2008 development t...
Learn how to drop all not null constraints from a postgresql table in one go with practical examples, diagrams, and best practices. Covers sql, postgresql, constraints development techniques with v...
Learn what are cons and pros a of defining a constraint deferrable with practical examples, diagrams, and best practices. Covers sql, oracle-database, database-design development techniques with vi...