Multilevel Security for Relational Databases

Osama S. Faragallah received a B.Sc. (Hons.), M.Sc., and Ph.D. in computer science and engineering from Menoufia University, Egypt, in 1997, 2002, and 2007 respectively. He is currently an associate professor in the Department of Computer Science and Engineering, Faculty of Electronic Engineering, Menoufia University. He was a demonstrator from 1997 to 2002 and has been assistant lecturer from 2002 to 2007. Since 2007 he has been a member of the teaching staff of the Department of Computer Science and Engineering at Menoufia University. He is the co-author of about 100 papers in international journals, conference proceedings, and two textbooks. His current research interests include network security, cryptography, Internet security, multimedia security, image encryption, watermarking, steganography, data hiding, medical image processing, and chaos theory. El-Sayed M. El-Rabaie (SM'92) was born in Sires Elian, Egypt, in 1953. He received a B.Sc. (Hons.) in radio communications from Tanta University, Tanta, Egypt in 1976, an M.Sc. in communication systems from Menoua University, Menouf, Egypt in 1981, and a Ph.D. in microwave device engineering from Queen's University of Belfast, Belfast, U.K. in 1986. Until 1989, Dr. El-Rabaie was a postdoctoral fellow in the Department of Electronic Engineering, Queen's University of Belfast. He was invited to become a research fellow in the College of Engineering and Technology, Northern Arizona University, Flagstaff in 1992, and a visiting professor at the Ecole Polytechnique de Montreal, Montreal, QC, Canada in 1994. He has authored and co-authored of more than 180 papers and 18 textbooks. He has been awarded the Salah Amer Award of Electronics in 1993 and the Best (CAD) Researcher from Menoufia University in 1995. He acts as a reviewer and member of the editorial board for several scientific journals. Professor El-Rabaie was the head of the Electronic and Communication