The company says the data warehousing technology will enable it to offer SQL Server databases that can scale into the hundreds of terabytes of data.
Company, which is in the process of being acquired by Microsoft, and one of its employees sued for patent infringement.
The software maker says the "Kilimanjaro" add-on, due in the first half of 2010, will add business intelligence features.
Company buys Datallegro, which Microsoft says will help the company compete with Oracle at the high-end of the market.
CNET's Ina Fried tries to cut through the jargon and explain just what is new in this three-year, $250 million deal.