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 ...

Continuing the discussion on VLDBs and SQL Server we need to look at the daily load of millions of rows. As stated before, doing this to an existing table with indexes will force the system to do a ...

When the data requirements of an organization change, the databases used to store the data must also change. If the data is not reliable and available, the system does not serve the business—rather, ...