Databases

File Format
Name	Databases
Ontology	Electronic File Formats Databases

See also Serialization for methods of storing, exporting, importing, and transferring structured data.

Classes of databases:

CODASYL databases

• DBMS32 (DEC)
• DMS1100 (Univac)
• IDS/2 (Honeywell)
• IDMS (Cullinet, and later Computer Associates)

General databases

• dBase II
• dBase III
• FoxPro
• Mork

Hierarchical databases

• IMS

ISAM (Indexed Sequential Access Method)

• Ability Database (.adb)
• Access (was also known as Jet)
• Extensible Storage Engine (ESE, EDB)
• Paradox

NoSQL databases

• CouchDB
• MongoDB
• Clusterpoint

Object-oriented databases

• Cache
• db40
• Gemstone
• Objectivity
• ObjectStore
• Versant

Relational databases

• Derby
• HSQLDB
• IBM DB2
• Ingres
• MemSQL
• MySQL
• Oracle
  • ARC (database backup format)
• PostGRESQL
• SQL Anywhere
• SQLite
• Virtuoso
• Watcom SQL

Triplestores

• 3store
• Apache Jena
• Mulgara

XML databases

• BaseX
• Documentum xDB
• eXist-db
• MarkLogic
• Oracle XML DB
• Qizx
• Sedna
• Tamino
• TEXTML
• TigerLogic XDMS
• Xpriori XMS
• XQuantum

Links

• Frictionless data
• Open Data Research Network
• Don't use Hadoop - your data isn't that big
• Social networks stick with MySQL
• From Punched Cards to "Big Data": A Social History of Database Populism
• If you move your mouse continually the query may not fail. Do not stop moving (that's Microsoft for you)