9. “Just a little longer … I want to be sure this is working correctly before I change over,” says Buffy, the owner of three bathroom accessories boutiques called Tub ’n Stuff. Her accountant, who helped her set up a new accounting information system, is desperately trying to persuade Buffy to change over completely to the new system. Buffy has insisted on running the old and new systems in parallel for an entire year.

a. Briefly describe the general problems involved in using a parallel conversion strategy for implementing a new information system.

b. In a paragraph, try to convince the owner of Tub ’n Stuff that a year of running a system in parallel is too long. Suggest a way to end Tub ’n Stuff’s dual systems that will provide enough reassurance to Buffy. (Assume that the new system is reliable.)