A.终端仿真(TELNET)连接
B.多种系统共存
C.Browse/Server(B/S)结构
D.传统的CLIENT/SERVER(C/S)结构
在Client/Server结构中,客户机使用一条SQL命令,将服务请求发送到(),由它将每一条SQL命令的执行结果回送给客户机。
A.对象服务器
B.应用服务器
C.数据库服务器
D.文件服务器
A.SYBASE是美国IBM公司在20世纪80年代中期推出的客户机/服务器结构的关系数据库系统,也世界上第一个真正的基于client/server结构的RDBMS产品
B.ORACLE是微软公司开发的一种适用于大型、中型和微型计算机的关系数据库管理系统
C.SQL Server是微软公司开发的一个关系数据库管理系统,以Transact-SQL作为它的数据库查询和编程语言
D.DB2是SUN公司开发的关系数据库管理系统
A.GE级别的路径本质上是属于Client级别的路径。
B.U2000可以实现ODU2级别的路径管理。
C.在网络中,只能创建一个网关网元。
D.U2000分为Server和Client两部分。Server必需先处于运行状态。
A.在网络中,只能创建一个网关网元。
B.U2000可以实现ODU2级别的路径管理。
C. U2000分为Server和Client两部分。Server必需先处于运行状态。
D.GE级别的路径本质上是属于Client级别的路径。
选出应填入下面一段英语中______内的正确答案。
The primary advantages of a Client/Server system arise from splitting the processing between the client system and the database server. Since the bulk of the database processing is done on the back-end, the speed ofthe DBMS isn't tied to the speed ofthe(1).
The major disadvantage of Client/Server system is the increased cost of(2)and support personnel who maintain the database server. There is also the issue of(3)with so many parts comprising the entire C/S system; Murphy's Law can kick in-the more pieces that compose the system, the more pieces that can fail. It's also harder to track down problems when the system(4). And it can initially take longer to get all the components set up and working together. All this is compounded by the general lack of experience and expertise of potential support personnel and programmers, due to the relative newness of the technology. As C/S system become more common, this problem should abate.
Therefore the C/S systemis more(5).