RDBMS systems

• MySQL
  • free: GPL license
  • runs on UNIX, Linux, Windows
  • C, C++, Java, Perl, Python interfaces
  • fast
  • lacks foreign keys, transactions
  
  
• PostgreSQL
  • free: GPL license
  • runs on UNIX, Linux
  • C, Perl, Python interfaces
  • slowish
  • has most data integrity stuff
  • problems with BLOB/CLOB
  
  
• Oracle
  • commercial
  • runs on most systems: UNIX, Linux, Windows
  • C, Perl interfaces
  • optimized for several systems
  • dominates the market
  • object-related extensions