软件体系结构定义了软件的局部和总体计算部件的构成，以及这些部件之间的相互作用关系。部件包括诸如服务器、客户、数据库、过滤器、程序包、过程、子程序等一切软件的组成成份。相互作用关系包括诸如过程调用、共享变量访问、消息传递等。相互作用也包括具有十分复杂的语义和构成关系，诸如客户/服务器的访问协议、数据库的访问协议网络的传输协议、异步事件的映射等，除了描述系统的构成和结构关系外，在系统的功能需求方面，体系结构还表达了系统需求和构成之间的对应关系。-Software architecture defines the local and overall calculation section configured software, and the interactions between these components. Component comprises as constituent servers, clients, database, filters, packages, procedures, subroutines and all software. Including the interaction between such procedure calls, shared variable access, messaging and so on. Also includes a very complex interaction semantics and a relation such as, for addition to describing the relationship between the composition and the structure of the system, the feature access protocol client/server database access protocol network transport protocol, the asynchronous mapping of events in the system, etc. the demand side, the architecture also expressed correspondence between system requirements and constitute between.