Learn what is the syntax for creating a check constraint in SQL and how to use it to validate your data and enforce data ... Check constraints can also simplify your queries and ...

SQL Server 2000I need to change the collation for a database from case senstitive to case insensitive. ALTER DATABASE COLLATE SQL_Latin1_General_CI_AS When I try to so, I get a whole slew of ...

When I am working with an Oracle database, I still find myself using SQL*Plus for many quick and dirty database queries. In particular, I often look up constraints in SQL*Plus. In this post, I ...

I vincoli di tupla e di dominio sono concetti importanti nei database relazionali per garantire l'integrità dei dati e per definire regole che le tuple (righe) devono seguire. Vincolo di Tupla (Tuple ...