Oracle is buying Sunopsis, a firm that specializes in data integration. The company is based in Burlington, Mass., near Oracle’s pharmacuetical division. Sunopsis customers in pharma include Aventis, Lilly, Pfizer and Roche. In its latest acquisition, for which no price was disclosed, the database giant did say that the new addition to its arsenal will be incorporated into the forthcoming “Fusion” project that combines all of its recent purchases.