Two key attributes in an EER, what does it mean? I'm currently drawing an EER diagram and stumbled across this problem:
Let's say I'm modeling a workplace where all employee's uniquely can be identified by their name (ie no employees share the exact same name) and their employee number. Is this a correct way to model it?

I'm not really sure on whether this is an ok design. Does this design say that Name and Emp_nr together form a unique Employee, or does it say that Name and Emp_nr independently from each other can identify my Employee? I've been searching everywhere and couldn't find a single example on where 2 key attributes is used.
This only tells that an Employee has two attributes which are bith a combined primary key

he has a name and
a employer number

In a Table structure , it will be displayer as two columns for the Table Employee and the would have a PRIMARY KEY(Emp_nr,Name)
Employee
-------
Emp_nr

Name