Through the many changes in IT over the years, one constant has always been a concern for performance. With database systems there is especially true. Even with the many advances in relational ...

SQL is the lingua franca for modifying and reading database data and any DBA worth his (or her) paycheck should be proficient in writing SQL queries. But SQL is a flexible and feature-rich language, ...

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 ...