ISBN : 978-81-963532-2-3 (E-Book) starting andcompletionoftasks.Acriticaltaskisonewithazeroslacktime.Apathfromthestartnodetothe finish node containing only critical tasks is called a critical path. These parameters fordifferenttasksforthe MIS problem areshown in thefollowingtable. Task Specification Designdatabase DesignGUIpart Codedatabase CodeGUIpart Integrateandtest Writeusermanual ES 0 15 15 60 45 165 15 EF 15 60 45 165 90 285 75 LS 0 15 90 60 120 165 225 LF 15 60 120 165 165 285 285 ST 0 0 75 0 75 0 210 The critical paths are all the paths whose duration equals MT. The critical path in fig. 36.2 isshownwith ablue arrow. GanttChart Ganttchartsaremainlyusedtoallocateresourcestoactivities.Theresourcesallocatedtoactivities include staff, hardware, and software. Gantt charts (named after its developer HenryGantt) are useful for resource planning. A Gantt chart is a special type ofbar chart where eachbar represents an activity. The bars are drawn along a time line. The length of each bar isproportionalto theduration oftime planned forthecorrespondingactivity. Gantt charts are used in software project management are actually an enhanced version of thestandard Ganttcharts.In the Ganttchartsusedfor softwareprojectmanagement,eachbarconsists of a white part and a shaded part. The shaded part of the bar shows the length of timeeach task is estimated to take. The white part shows the slack time, that is, the latest time bywhich a task must be finished. A Gantt chart representation for the MIS problem of fig. 36.2 isshownin thefig. 36.3. 180 Software Engineering Keerthana P, Manasa KN, Ganga D Bengal
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