Lab_Equipment
| id | EquipmentName | PurchaseDate |
| 1 | Microscope | January 2023 |
| 2 | Thermometer | February 2023 |
| 3 | Scale | March 2023 |
| 4 | Beaker | April 2023 |
| 5 | Eyedropper | May 2023 |
Safety_Gear
| id | GearType | Date_of_Purchase |
| 1 | Gloves | January 2023 |
| 2 | Goggles | February 2023 |
| 3 | Mask | March 2023 |
| 4 | Hairnet | April 2023 |
| 5 | Boots | May 2023 |
Employees
| id | Name | Position |
| 1 | John Doe | Laboratory Technician |
| 2 | Jane Smith | Research Scientist |
| 3 | Alice Johnson | Quality Control Officer |
| 4 | Bob Brown | Engineer |
| 5 | Charlie Davis | Manager |
Purchases
| id | Date_of_Purchase | Lab_EquipmentId | Safety_GearId | EmployeeId |
| | (→ Lab_Equipment.id) | (→ Safety_Gear.id) | (→ Employees.id) |
| 1 | January 2023 | 1 | 1 | 1 |
| 2 | February 2023 | 2 | 2 | 2 |
| 3 | March 2023 | 3 | 3 | 3 |
| 4 | April 2023 | 4 | 4 | 4 |
| 5 | May 2023 | 5 | 5 | 5 |