The relational database is primarily oriented toward the modeling of objects (entities) and relationships. Generally, the relational model works best when there are a relatively small and static ...

Was it just two or three years ago when choosing a database was easy? Those with a Cadillac budget bought Oracle, those in a Microsoft shop installed SQL Server, those with no budget chose MySQL.

Every type of database is a metaphor for the arrangement of information. The earliest mainframe databases arranged their contents in a simple, tree-like hierarchy. This had a number of drawbacks, ...