DFD DIAGRAM PRESENTED BY: CHRIS WILLIAMS SUGI TERBISH CARL SMITH Dow Chemical.
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Transcript of DFD DIAGRAM PRESENTED BY: CHRIS WILLIAMS SUGI TERBISH CARL SMITH Dow Chemical.
DFD DIAGRAM
PRESENTED BY:CHRIS WILLIAMS
SUGI TERBISHCARL SMITH
Dow Chemical
Business Background
Dow Chemical is a world-wide leading supplier of plastic resins and material science innovations
As of 2008Annual sales $57.4 billion46,000 employees worldwide150 manufacturing sites in 35 countries Produce 3,300 different products
Business Background
Dow Houston Operations located in Deer Park, TXComplex covers 139 acresProduces and sells more than 500 million pounds of product annually Products are shipped via rail, truck, and
pipelineEmploys more that 375 employees and
contractors.
Business Need
Provide a business database to keep better track of incoming and outgoing shipments of raw materials and product
Keep track of the raw materials used in production of Dow’s products: what vendors the product was purchased from how it was delivered to the company (via truck, train, or
pipeline) how it was delivered to the buyer (via truck, train, or
pipeline) Determine the ROP based on flow of inventory per quarter
CONTEXT DIAGRAM
EXTERNAL ENTITIES
Customer Warehouse Vendor Manager
PROCESSDow Chemical Inventory System
Context Diagram
LEVEL 0 DIAGRAM
EXTERNAL ENTITIES Customer Warehouse Vendor Manager
PROCESSES1. Customer Processing2. Fill Order3. Inventory Verification Process4. Materials Order5. Create Invoice6. Report Processing
DATA STORE Customer Data Orders Merchandise Invoice Data Vendor Data
LEVEL 0 DFD
LEVEL 1 DFD FOR PROCESS 1
PROCESSES 1.1 Create Customer Account 1.2 Retrieve Customer Account
DATA STORE Customer Data
LEVEL 1 DFD FOR PROCESS 1
LEVEL 1 DFD FOR PROCESS 2
PROCESSES 2.1 Order Processing 2.2 Verify Order
DATA STORE Orders
LEVEL 1 DFD FOR PROCESS 2
LEVEL 1 DFD FOR PROCESS 4
PROCESSES 4.1 Order New Materials 2.2 Receive Materials
DATA STORE Vendor Data
LEVEL 1 DFD FOR PROCESS 4
Questions???