Oh, and his partner is Dave Duffield, who is a legend in the software business.

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And Workday's co-CEOs are Aneel Bhusri and Dave Duffield, who used to run software maker PeopleSoft, also bought by Oracle.

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Dave Duffield is a serial entrepreneur and the creator of PeopleSoft, a successful business-software firm swallowed by Oracle in 2004 after a hostile bid.

ECONOMIST: Business computing