D. Field data because that it a report of what happened over the week that a manager can reflect on for possible changes.
Answer:
there is lot of difference
Answer:
Basically it creates a unique identifier for each row in your table and that can help you link your table to other tables using primary key as link
Explanation:
"Primary key allows you to create a unique identifier for each row in your table. It is important because it helps you link your table to other tables (relationships) using primary key as links."
The keys in all rows that's sit between the touch keys are the stretch key
