Oracle, big boy of the Database world. There’s no enterprise in the world today that does not know or use Oracle products in some way.
Their strategy over years has been to acquire their competitors to retain market share. Siebel (CRM), Innobase (InnoDB), PeopleSoft just to name a few.
Oracle has a full page dedicated to it’s acquisitions. It’s a good readÃ‚Â Go there now.