This entity shows the details of the skill. Includes information like the effective and expiry date of the skill and the proficiency.

This attribute is the system generated identifier. It is blind to the user. It also holds the primary key for the Personal table.

Shows the date of when the skill was effective from. It also acts as a primary key for the SkillLevel table.
It is in the format: DD-MM-YYYY.

Shows the level of proficiency the employee has. It is the ability of an individual to speak or perform in an acquired language.

Shows the date of when the skill expires.
It is in the format: DD-MM-YYYY.

Stores any remarks about the skills level.