This curriculum guide is intended for Missouri teachers teaching a course in database applications for high school students enrolled in marketing and cooperative education. The curriculum presented includes learning activities in which students are taught to analyze database tables containing the types of data typically encountered by employees responsible for maintaining inventory records, customer data, salesperson data, purchase order information, and information about customer purchases. Each learning activity is presented in the form of a detailed lesson plan containing some or all of the following: learner outcome; competencies; Missouri Show-Me Standard(s) (knowledge and performance standards) addressed; objective; steps entailed in competing the learning activity; activity sheet; and answer key. The following topics are covered in the learning activities included: completing purchase order forms; completing invoices; completing inventory transactions; determining cumulative discounts for customers; defining discount terms; determining cash discounts for customers; analyzing customer invoice payments; completing inventory return transactions; determining return procedures for customers; determining reorder procedures; calculating stock turnover; determining defects and missing stock; determining seasonal discounts for customers; analyzing customer purchases; analyzing strategies to increase sales; developing a sales incentive program; and developing sales goals. (MN)