What are the most significant differences among structured, object-oriented, and agile methods? what do have in common?

The most significant differences are that structured development relies on structure charts and DFDs. O-O methods use a variety of diagrams, including using of class, case, and sequence. One the other hand, agile methods tend to use other iterative models.

They all go through systems implementation and that is what is common with them.

no, it just either gets automatically 5 points to give away, or u can choose how many points u want to give but, the answerer only gets half

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