It is distributed object technology that combined by network and object oriented technology in 90's last century, and it is difficult to extend across Internet. Contributed by HTTP and xML, Web service is becoming...
详细信息
It is distributed object technology that combined by network and object oriented technology in 90's last century, and it is difficult to extend across Internet. Contributed by HTTP and xML, Web service is becoming the component called through the Web. In this article, we describe and analyze some current distributed object technologies,and then introduce the emerging Web Service technology. We introduce and analyze the two software strategies: Microsoft . NET and Sun ONE. Web Services will transform the current isolated Internet Web into interconnected services.
Being an important part of Information System, Database Security has absorbed much attention fordecades. First, we bring forth the Database Security's contents, properties of data: sensitivity, integrity and avail...
详细信息
Being an important part of Information System, Database Security has absorbed much attention fordecades. First, we bring forth the Database Security's contents, properties of data: sensitivity, integrity and availabil-ity. Several access control models to guarantee these properties are described in this paper. Due to the challengesbrought by advanced DBMSs such as OODBMS and ADBMS, we also discuss some security topics in these fields. Atthe end of this paper, the encryption control and inference control are reviewed together with some trend of thedatabase security technology in the future.
暂无评论