在系统开发周期 system development life cycle ; SDLC
目在系统的设计开发 System Design and Development ; SDD
在信息系统开发 Information Systems Development ; ISD
项目在系统的设计开发 System Design and Development
这代表着在系统开发之前，就从系统开发转向到科技开发。
It does represent a shift away from developing systems to developing technologies before developing systems.
接着介绍了在系统开发中用到的分布式数据库技术的理论和软件工程理论；
Second, it introduces the related theory of the distributed database system and software engineering used in the project.
在系统开发中，适用于系统设计、性能以及生产潜力评估的一种系统模型。
In system development, a model suitable for evaluation of system design, performance, and production potential.
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