The RDF Data Model (RDF Model) is closely connected with the Model of Relation Databases. A Relation Database consists of Tables, which consists of Records (Rows). Each Record consists of a Set of Fields. The Record is nothing but the Content of its Fields, just as an RDF node is nothing but its Connections: the Property Values.
RDBMS Elements can therefore easily be mapped to their Counterparts in RDF:
record (row) -> Node (Subject)
Field (Column) -> [Property](/blog/622/)
Record Field (Table Cell) -> Value (Object)
Primary key -> [URI](/blog/586/) of the node
