(CNN)Here is a look at the life of Larry Ellison, co-founder and former CEO of Oracle.
Birth date: August 17, 1944
Birth place: New York, New York
Full name: Lawrence Joseph Ellison
Father: Adoptive - Louis Ellison, an accountant; Birth - an Italian-American air force pilot
Mother: Adoptive - Lillian (Spellman) Ellison, aunt of his birth mother, Florence Spellman
Marriages: Melanie Craft (2003-2010, divorced); Barbara Boothe (1983-1987, divorced); Nancy Wheeler (1977-1978, divorced); Adda Quinn (1967-1974, divorced)
Children: with Barbara Boothe: David and Megan
Education: Attended University of Illinois at Urbana-Champaign, 1962-1964; Attended University of Chicago, 1966
Ellison learned at age 12 that he had been adopted by his birth mother's aunt and uncle when he was nine months old.
Florence Spellman, Ellison's birth mother, was nineteen years old and not married to Ellison's birth father, whom Ellison has never met.
Oracle is the world's second largest software company, second only to Microsoft.
The inspiration for Oracle came from a 1976 white paper by IBM Research, which posited the potential of a relational database management system.
1977 - Ellison, Bob Miner, and Ed Oates found Software Development Laboratories (SDL), and are contracted by the CIA to build a database program code-named "Oracle." The company's name is later changed to Relational Technologies, then Oracle Corporation.
1977 - Becomes CEO of Oracle Corporation.
1978-1996 - President of Oracle.
1986 - Oracle goes public, raising $31.5 million in its initial public offering.
1990-1992 - First stint as chairman of the board.
December 25, 1991 - Is left with a broken neck, punctured lung, and other injuries while bodysurfing in Hawaii.
1995-2004 - Second stint as chairman of the board.
1997 - Founds The Ellison Medical Foundation, a non-profit that supports biomedical research on age-related diseases and disabilities.
August 11, 2000 - Founds Oracle Racing, Inc., a sailboat racing syndicate.
February 14, 2010 - Wins the 33rd America's Cup with his BMW Oracle Racing team.
June 21, 2012 - According to a statement from the governor of Hawaii, Ellison has bought 98% of the Hawaiian Island of Lana'i.
February 27, 2013 - Purchases Island Air, a Hawaii-based regional airline, through a holding company.
September 25, 2013 - Oracle Team USA, backed by Ellison, comes from behind to win and successfully defend the America's Cup.
September 18, 2014 - Ellison announces that he is stepping down as Oracle's CEO. Safra Catz and Mark Hurd, Ellison's top lieutenants, will replace him as co-CEOs.
March 2015 - Number five on the Forbes World's Billionaires list, with a net worth of $54.3 billion.