weird questions

[methodsboy]

hey
i couldn't answer any of the following questions and i was hoping that someone could help:

Q 1.   
What types of tools can be used to document the existing system, and what do they show?

Q 2.   
What will the final stage of the analysis phase do?

Q 3.   
Why in the development of many systems is the output designed first?

[excal]

hey
i couldn't answer any of the following questions and i was hoping that someone could help:

Q 1.   
What types of tools can be used to document the existing system, and what do they show?

Q 2.   
What will the final stage of the analysis phase do?

Q 3.   
Why in the development of many systems is the output designed first?

1. Flowcharts, DFDs, ERDs (I don't know if you cover these), etc.

2. Document user requirements

3. User requirements, as discovered in the analysis phase, are often outputs and, sometimes, the processing taken to get the outputs. Furthermore, the business is only concerned about getting the output from the proposed system (and when signing off on the design, tend to look and scrutinise this a lot more).

[methodsboy]

thanks a lot !

[methodsboy]

What are the four factors that should be taken into consideration when designing data collection tools?

[excal]

Security, privacy, validation and appropriateness.

There are probably thousands more factors.