Microsoft is planning to launch a new database system. Below is the process with different main processes and sub-tasks so you will end up with multiple diagrams (one for the main process and one for the subtasks).

Activity ID	Activity	Predecessor	Duration (Days)
1	Analysis Process	-	4
1a	On-site meetings	-	1
1b	Discussion with shareholders	On-site meetings	1
1c	Document current system	Discussion with shareholders	2
2	Design Process	Analysis Process	20
2a	Design database	Discussion with shareholders	5
2b	Software design	Design database	7
2c	Interface design	Design database	5
2d	Create design specification	Design database	3
3	Development Process	Design Process	15
3a	Develop System Modules	Create design specification	5
3b	Integrate System Modules	Develop System Modules	4
3c	Perform Initial Testing	Integrate System Modules	6
4	Testing Process	Development Process	7
4a	Perform System Testing	Perform Initial Testing	3
4b	Document Issues Found	Perform System Testing	1
4c	Find solutions	Document Issues Found	3
5	Introduce new system	Testing Process	1

Instructions:

1. Create a precedence diagram model

• Perform a forward pass and backwards pass

• Calculate the float/slack

• Identify the critical path