Annie Walker is a sales associate for Drug Co. Annie uses her company issued computer to access Drug Co. 's accounting information system when she travels across the country. She has access to view customer and product information. She also has access that allows her to enter and cancel customer orders. Annie's right to access those portions of Drug Co. 's AIS represents a(n) ________ in the company's database management system.
A. internal-level schema.
B. external-level schema.
C. data dictionary.
D. conceptual-level schema.