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Database systems

Taxonomy of database systems

according to the data model

hierarchical (ibm ims, filesystems) graph (neo4j, orientdb) relational (mysql, oracle, postgresql) key-value pairs (redis, riak) object-oriented (cache) document-oriented (mongo)

History

why hierarchical failed (except for filesystems):

  • “Hierarchical database systems are difficult to use. They require application developers to program navigation through the connected records […]”
  • “They also require developers to predict all possible access patterns in advance and design the database accordingly. A database access pattern that is not included in the design becomes very difficult and inefficient.”

from: http://c2.com/cgi/wiki?HierarchicalDatabase

CINF 201 material by Joshua Eckroth is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. Source code for this website available at GitHub.