Data models focus on required data elements and associations; most often they are expressed graphically using entity-relationship diagrams. On a more abstract level, the term is also used in ...

Michael Stonebraker is widely recognized as one of the pioneers of the relational database. While at Berkeley, he co-founded the INGRES project, which implemented the relational principles published ...

Hierarchical databases are often considered the most natural representation because XML itself is a hierarchy of elements and character data. Tamino, a hierarchical XML data store based on Adabas, ...