(e) Graph Databases
Graph Databases (GD) store information in multi-attribute tuples
that reflect relationships in a different way. At the top of GD
there may be a key/value store, columnar database, ‘‘BigTable’’
database or combination of these and other architectures.
A graph database might be used to store the ‘‘friend’’ relationships
of a social network, with a record merely consisting of
two friends who share a relationship. GDs are suitable for handling
highly interconnected data and therefore are very efficient
in traversing relationships between different entities. In Facebook
everything is a Graph.
The features of GD are: