The OOAD course is usually taken after taking the software engineering course, although some students reverse the order due to scheduling constraints.
OOAD课程通常在软件工程课程之后进行，但也有一些学生由于时间安排的限制颠倒了这一顺序。
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IBM has developed a novel MDD and pattern-based engineering (PBE) process, along with associated tooling, which simplifies and automates the use of constraints within a model.