Each attribute can have more than 1 value and these values can be selected accordingly for the employee/ However each attribute can be only of 1 type: plain text (String), numbers (numeric) or date.
If there is more than 1 kind of this item, e.g. different models, you can either set it up as 1 type but with different models stored as attributes.

Shows the identity of the name attribute. It acts as a primary key for the ItemAttrName table.

Stores a description about the name attribute.