The activities, their durations and precedences for designing, writing and installing a bespoke computer database are shown in Table 16.6. Draw a Gantt chart and a network diagram for the project and calculate the fastest time in which the operation might be completed.

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Table 16.6 Bespoke computer database activities Activity 1 Contract negotiation 2 Discussions with main users 3 Review of current documentation 4 Review of current systems 5 Systems analysis (a) 6 Systems analysis (b) 7 Programming 8 Testing (prelim) 9 Existing system review report 10 System proposal report 11 Documentation preparation 12 Implementation 13 System test 14 Debugging 15 Manual preparation Duration (weeks) 12564INNINSTAL 7 19 7 3 Activities that must be completed before it can start 1 1 24551221 3,4 7 3,4 5,9 5,8 7,11 12 12 11