需求
“An employee skills and certification database with employees, skills, certifications, training courses, employee skills, and employee certifications, including issue and expiry details.”
接著試試Add a manager approval for certificationsAdd a training session schedule
這張圖裡有什麼
看懂背後的決策。
01
Modeled certification as an associative entity to capture many-to-many relationship between employee and skill with additional certification details.
02
Used Crowsfoot notation (v0.1) to represent one-to-many relationships from Employee and Skill to Certification.
03
Explicitly defined foreign key references in the Certification table for clarity.
Use this schema when building an HR system that requires tracking which employees are certified in which skills.