Traffic_Engineers

idnameyears_of_experience
1John20
2Anna30
3James25
4Emma28
5Michael27

Tools

tool_idtool_nametype
1Software_Modelingsoftware
2Road_Simulationhardware
3Vehicle_Trackinghardware
4Accident_Analysissoftware
5Signal_Optimizationsoftware

Traffic_Engineers_Tools

engineer_idtool_id
(→ Traffic_Engineers.id)(→ Tools.tool_id)
11
12
21
23
31
32
42
45
53
54
41
51