1. The context diagram shows the key external entities that interact with the order system - customers, warehouse, and accounting. It displays the major information flows between these entities and the system.
2. The level-0 DFD of the order system contains 5 main processes: 1) check status, 2) issue status messages, 3) generate shipping order, 4) manage accounts receivable, and 5) produce reports. It also includes 2 data stores - pending orders and accounts receivable - and displays the high-level data flows between the entities, processes, and data stores.
1. The context diagram shows the key external entities that interact with the order system - customers, warehouse, and accounting. It displays the major information flows between these entities and the system.
2. The level-0 DFD of the order system contains 5 main processes: 1) check status, 2) issue status messages, 3) generate shipping order, 4) manage accounts receivable, and 5) produce reports. It also includes 2 data stores - pending orders and accounts receivable - and displays the high-level data flows between the entities, processes, and data stores.