Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database table and index structures. Maintain table data integrity through constraints. Understand how to ...

Conventional databases, meaning relational databases that use SQL (Structured Query Language ... simple answer is that many applications still call for the kinds of constraints, consistency ...

By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when ... If a delete statement affects rows in a foreign key table, those values will ...