sentences:  Having been bought by Unidata Corporation in 1996, and following Unidata's merger with VMark Software to form Ardent Software in 1998, the SystemBuilder product set came under the ownership of Informix in 2000 following their purchase of Ardent Software for its Datastage product.Subsequently, in 2001 Informix themselves were bought by IBM, and the U2 and SystemBuilder products eventually found their way to become part of IBM's Data Management portfolio.Development of the SystemBuilder and RedBack products continued in Sydney until 2005, when they were merged with the U2 development team located in Denver, United States.