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, ...

In writing a definition for an entity, an attribute, or any other element within a database design, the desired end is a descriptive text that is clear, factual and concise. Semantics are an ambiguous ...

A very popular relational database management system (DBMS) from Oracle, introduced in 1978. Oracle was the first database product to run on a huge variety of hardware from micro to mainframe, giving ...