In the old days, big data used to be called data warehousing. But that was when corporations stored all their own data on their own servers. Today, it's just called big data and it generally refers to the vast reaches of data in the cloud. Old big data is buying new big data today, as data warehousing powerhouse Teradata just announced it will be acquiring Aster Data Systems for $263 million. Teradat already owns an 11 percent stake in Aster Data, which it bought last September. The $263 million, which is "net of debt and other expenses," will purchase the remaining 89 percent, giving Aster Data a final valuation of $295 million. ASter Data has raised $53 million from Sequoia, First Round Capital, and IVP. Ron Conway, David Cheriton, and Anand Rajaraman were angel investors.