Some or all reference tables then are declared by fiat to also be dimensions. While on a superficial level there are similarities between dimension tables and more normalized look up or reference ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Melissa has a variety of tools available to clean, validate and enhance the Contact dimension in your SQL Server data warehouse. Specifically, Melissa's suite of SSIS Data Quality Components can be ...