Excel possesses formidable database powers. Creating a relational database starts with a Master table that links it to subordinates, called (awkwardly) Slave, Child, or Detail tables. Before we dive ...

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 ...

Hey all, <BR><BR>Simple question, I suspect...but have to ask to make sure.<BR><BR>I'm migrating to MySQL after using MS Access for years. In Access, to create, say, a one-to-many relationship between ...

I've said it before and I'll say it again: If you want to speed up your application, don't look at your code, look at your data access. The two slowest things you can do in application development are ...

Designing an appropriate set of indexes can be one of the more troubling aspects of developing efficient relational database applications. Perhaps, the most important thing you can do to assure ...

Say we have two types of tools: hammers and wrenches. We have a list of work orders, and we want to track what tool was used for the hammering and what was used for the wrenching. The problem is that ...