-Maintains database by entering new and updated customer and account information. -Enters customer and account data by inputting alphabetic and numeric information on keyboard or optical scanner according to screen format. -Verifies entered customer and account data by reviewing, correcting, deleting, or reentering data. -Tests customer and account system changes and upgrades by inputting new data. -Maintains operations by following policies and procedures and reporting needed changes. -Maintains customer confidence and protects operations by keeping information confidential.