Gantt charts and project scheduling in Software Engineering - Step-by-Step Execution

Concept Flow - Gantt charts and project scheduling

List Tasks

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Estimate Duration

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Determine Dependencies

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Create Timeline

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Draw Bars for Tasks

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Track Progress

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Adjust Schedule if Needed

The flow shows how tasks are listed, durations estimated, dependencies set, timeline created, tasks drawn as bars, progress tracked, and schedule adjusted.

Execution Sample

Software Engineering

Task A: 3 days
Task B: 2 days (after A)
Task C: 4 days (after A)
Draw timeline
Plot bars
Update progress

This example schedules three tasks with dependencies and shows how they appear on a Gantt chart.

Analysis Table

Step	Action	Details	Result
1	List Tasks	Tasks: A, B, C	Tasks identified
2	Estimate Duration	A=3d, B=2d, C=4d	Durations set
3	Determine Dependencies	B and C start after A	Dependencies noted
4	Create Timeline	Timeline from day 1 to day 9	Timeline established
5	Draw Bars	A: day 1-3, B: day 4-5, C: day 4-7	Bars plotted on chart
6	Track Progress	A completed day 3	Progress updated
7	Adjust Schedule	Delay in C by 1 day	Schedule updated
8	End	All tasks scheduled and tracked	Process complete

💡 All tasks are scheduled with dependencies and progress tracked; scheduling process ends.

State Tracker

Variable	Start	After Step 2	After Step 3	After Step 5	After Step 6	Final
Tasks	None	A,B,C	A,B,C with dependencies	Tasks with bars on timeline	Progress updated	Final schedule with adjustments
Timeline	None	None	None	Day 1 to 9	Day 1 to 9	Day 1 to 9 with delay
Progress	0%	0%	0%	0%	A done (33%)	Adjusted progress

Key Insights - 3 Insights

Why do tasks B and C start after task A?

Because dependencies mean B and C cannot start until A finishes, as shown in step 3 of the execution_table.

What happens if a task is delayed?

The schedule must be adjusted to reflect the delay, as shown in step 7 where task C is delayed by 1 day.

How does the Gantt chart show progress?

Progress is shown by updating the bars to reflect completed portions, as in step 6 where task A is marked complete.

Visual Quiz - 3 Questions

Look at the execution_table at step 5, what days does task B cover?

A Day 1 to 3

B Day 4 to 5

C Day 4 to 7

D Day 6 to 8

💡 Hint

Check the 'Draw Bars' action in step 5 of the execution_table.

At which step is the timeline first created?

A Step 2

B Step 3

C Step 4

D Step 5

💡 Hint

Look for 'Create Timeline' in the execution_table.

If task A took 4 days instead of 3, how would the schedule change?

A Tasks B and C would start later

B Tasks B and C would start earlier

C No change to tasks B and C

D Task A would be shorter

💡 Hint

Refer to dependencies in step 3 and timeline in step 4 of the execution_table.

Concept Snapshot

Gantt charts show tasks as bars on a timeline.
Tasks have durations and dependencies.
Bars start after dependent tasks finish.
Progress updates show completed work.
Schedules adjust if delays occur.

Full Transcript

Gantt charts help plan projects by listing tasks, estimating how long each takes, and showing which tasks depend on others. We create a timeline and draw bars for each task, starting after their dependencies finish. As work progresses, we update the chart to show completed tasks. If delays happen, we adjust the schedule to keep the project on track.