Answer:
barcode number, description, price, and sales associate
Step-by-step explanation:
To be able to track the sales using a database, Emma needs to create as much fields as the type of information she needs to be able to analyze her sales. So, according to this, as she needs to sort by price and sales associate and to look up the barcode numer and the description, she has to create a field for each of these pieces of information. Because of this, the fields she should have in her database are: barcode number, description, price, and sales associate.