Infodata Systems Inc., (OTCBB:INFD) announced it has signed a Definitive Merger Agreement to be acquired by McDonald Bradley Inc. (MBI), a privately held information technology solutions provider to the government marketplace with headquarters in Herndon, Virginia. The acquisition will be a cash transaction for 100% of the stock of Infodata. The transaction, which is planned to close during the third quarter of 2005, is subject to approval by Infodata’s shareholders and other customary conditions of closing.