A full list of all the new popular databases and their uses

Question

Recently I have found that there are many new databases popping up all around my radar  and I would like to make a list of what they do and perhaps what their advantages disadvantages are  I ll seed the list with some names and perhaps someone with more knowledge can chip in with some information about each and how they stack up  I hope this will fast become a comprehensive list of all the available database so that developers can leverage the right one for the job at hand  Relational Databases  Established   DB2 MySQL Oracle PostgreSQL SQLite SQL Server Sybase OpenEdge SQL  New   RethinkDB  Key-value stores   Berkeley DB memcached redis  Document oriented Stores   couchDB mongoDB List item  Graph DataBases   Neo4j AWS Neptune Sesame AllegroGraph different RDF triplestores

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I doubt I d use it in a mission-critical system  but Derby has always been very interesting to me

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The SQLite database engine   self-contained serverless zero-configuration transactional cross platform Unix  Linux and Mac OS X   OS 2  and Windows  Win32 and WinCE  are supported out of the box  Easy to port to other systems  faster than heck   With library for most popular languages    Net perl Feel free to edit this and add more links

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What about CassandraDB  Project Voldemort  TokyoCabinet

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Martin Fowler did an interesting blog post last year about non-relational databases starting to gain traction  He mentions    Drizzle  a  bare bones  relational database  CouchDB  a document-oriented database  GemStone  an object-oriented database    There is also Google s BigTable which is described as  a sparse  distributed multi-dimensional sorted map    I have been working with GemStone for a number of years now and the productivity gains is amazing - having the database store your objects directly removes the need to constantly marshall back and forth between tables and objects

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There are graph databases like    Neo4j Sesame AllegroGraph different RDF triplestores   A graph database stores data as nodes and relationships edges This is a good fit for semi-structured data  interconnected information and domains with deep relationships traversal  for example social networks and knowledge representation  The data model is highly flexible and  whiteboard friendly   The underlying data model of the semantic web  RDF  is also a  labeled  directed multi- graph    Other stackoverflow threads with information on graph databases    The Next-gen Databases Non-Relational Database Design  listing some   -  Have anyone used Graph based databases

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To file under both  established  and  key-value store   Berkeley DB   Has transactions and replication  Usually linked as a lib  no standalone server  although you may write one   Values and keys are just binary strings  you can provide a custom sorting function for them  where applicable    Does not prevent from shooting yourself in the foot  Switch off locking transaction support  access the db from two threads at once  end up with a corrupt file

[database] A full list of all the new/popular databases and their uses?

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