IBM DB2

IBM DB2 is a relational model database server developed by IBM. There are three DB2 products that are very similar, but not identical: DB2 for LUW (Linux, Unix, and Windows), DB2 for z/OS (mainframe), and DB2 for iSeries (formerly OS/400). The DB2 LUW product runs on multiple Linux and UNIX distributions, such as Red Hat Linux, SUSE Linux, AIX, HP/UX, and Solaris, and most Windows systems. DB2 also powers the IBM InfoSphere Warehouse edition, which is basically DB2 LUW with DPF (Database Partitioning Feature), a massive parallel share-nothing data warehousing architecture. Alongside DB2 is another RDBMS: Informix, which was acquired by IBM in 2001.