Data management refers to several levels of managing data. From bottom to top, they are: (1) The part of the operating system that manages the physical storage and retrieval of data on a disk or other ...

When non-DBAs think about what it is that a DBA does, performance monitoring and tuning are usually the first tasks that come to mind. This should not be surprising. Almost anyone who has come in ...

Regular readers know that I periodically discuss database performance issues and that I always like to start with a definition of database performance, that I will reiterate here: If you need ...

A database that maintains a set of separate, related files (tables), but combines data elements from the files for queries and reports when required. The concept was developed in 1970 by Edgar Codd, ...