Khafagy , Mohamed Helmy. Improving perfomance of fault tolerance database availability based on software agents [[Thesis] /] الارتقاء بكفاءة سماحية قواعد البيانات اعتمادا علي برامج الوكلاء. Mohamed Helmy Khafagy. - 2009. - 191 p : ill ; 25 cm.+ +CD. includes summary in arabic. Thesis (PH.D ) -- Halwan university, 2009. includes bibliogrphic referance . All age. Dewey Class. No.: 005.74 National Library of Medicine Call No.: 005.74 / K I