## Company

id | name
--- | ---
1 | yourcompany1
2 | yourcompany2

## Employee

id | company_id | employee_name
--- | --- | ---
| (→ Company.id) |
1 | 1 | Employee of yourcompany1
2 | 1 | Another employee of yourcompany1
3 | 2 | Employee of yourcompany2

## Position

id | position_title | trades_jobs | company_id
--- | --- | --- | ---
|  |  | (→ Company.id)
1 | Position1 | Construction worker | 1
2 | Position2 | Electrician | 1
3 | Position3 | Construction worker | 2
4 | Position4 | Electrician | 2

## Skill

id | skill_type | position_id
--- | --- | ---
|  | (→ Position.id)
1 | Skill1 | Position1
2 | Skill2 | Position2
3 | Skill3 | Position3
4 | Skill4 | Position4