130) Briefly describe the following three methods of converting from an old system to a new system, and give the advantages and disadvantages of each: •direct approach •parallel operation •modular...

130) Briefly describe the following three methods of converting from an old system to a new system, and give the advantages and disadvantages of each:

•direct approach

•parallel operation

•modular conversion

131) What is the ultimate objective of breaking down an overall new systems development project into phases? How is this process accomplished?

132) What is a project accounting system, and how does it function?