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What are the basic solutions for the software development problems?

Basic requirements - clear, detailed, complete, achievable, testable requirements has to be developed. Use some prototypes to help pin down requirements. In nimble environments, continuous and close coordination with customers/end-users is needed.
Schedules should be realistic - enough time to plan, design, test, bug fix, re-test, change, and document in the given schedule.
Adequate testing – testing should be started early, it should be re-tested after the bug fixed or changed, enough time should be spend for testing and bug-fixing.
Proper study on initial requirements – be ready to look after more changes after the development has begun and be ready to explain the changes done to others. Work closely with the customers and end-users to manage expectations. This avoids excessive changes in the later stages.
Communication – conduct frequent inspections and walkthroughs in appropriate time period; ensure that the information and the documentation is available on up-to-date if possible electronic. More emphasize on promoting teamwork and cooperation inside the team; use prototypes and proper communication with the end-users to clarify their doubts and expectations.

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