CIS结构整体性较强。各部分模块中有一部分改变，就要关联到其他模块的变

The CIS structure is relatively integrated. Some changes in each part of the module must be related to the changes of other modules. It is difficult to upgrade the system. If there are new requirements for functions. Need to re-make a system. Therefore, maintenance costs are high. The B/S structure simplifies the client as much as possible. The server is responsible for the most important development and maintenance work. When upgrading the system or the network, only the software on the server side needs to be upgraded, and the client does not need any operation and is not affected in any way, so the maintenance cost of the system is relatively low.

CIS structure is strong as a whole. Some of the parts of the module change, it will be associated with other module changes, system upgrade difficult, if there are new requirements for functionality. A system needs to be re-made. As a result, maintenance costs are high. The B/S structure simplifies the client as much as possible. The server side is responsible for the most important development and maintenance work. When upgrading a system or network, only server-side software needs to be upgraded, and the client does not need to do anything without any impact, so the maintenance cost of the system is relatively low.

CIS structure has strong integrity. If some of the modules are changed, it will be related to the changes of other modules. It is difficult to upgrade the system. If there are new functional requirements. We need to build a new system. Therefore, the maintenance cost is high. B / S structure simplifies the client as much as possible. The server is responsible for the most important development and maintenance work. When upgrading the system or network, only the software of the server needs to be upgraded, and the client does not need any operation, so the maintenance cost of the system is relatively low.<br>