The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with the ...

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 ...

But these terms can contain multiple layers of meaning. To further complicate matters, they are not mutually exclusive. What are SQL and relational database systems? At a high-level SQL, or Structured ...