Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Chapter 5: The Value Chain Adv. DBMS & DW Hachim Haddouti

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 The Value Chain Series of databases that represent the value chain of the product flow Value chain: –Demand side: needs to satisfy customer’ s demand –Supply side: needs to manufcture producst

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 The Demand Value Chain six databases (all steps of product flow): finished goods inventory manufacturing shipments to distribution center distribution center inventory distribution center depletions to retail stores retail store inventory retail store sales

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Finished Goods: Time, Product, Warehouse Shipments to Distribution Center: Time, Product, Warehouse, Center, Contract, Mode Distribution Center: Time, Product, Center Depletions to Retail Stores: Time, Product, Center, Store, Contract, Mode … The Demand Value Chain

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Physical products move sequentially through this sequence --> May involve multiple different companies All 6 DBs share Product and Time dim “The attraction of assembling a value chain of databases is that several can be combined in a single report by drilling across.” --> snapshot of the value chain, how the bulge of product moves from manufacturer to consumer The Demand Value Chain cont.

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Design principle: “In order to support drill-across applications, all constraints on dimension attributes must evaluate to exactly the same set of dimensional entities from one database in the value chain to the next database in the value chain.” a common dimension table shared by all fact tables special cases: dimensions with reduced detail (Ch 16) eg, manufacturer has a finer detail than later derived dimensions that support aggregates (Ch 13) precomputed sums to help specific queries The Demand Value Chain cont.

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Potential subdivisions in the value chain: Transshipments -- shuffling materials before passing them on, eg. with multiple holding points in multiple plants. Breaking inventory steps -- unallocated to allocated Separating orders and shipments, returns multiple shipments can satisfy one order returns must be tracked carefully, with reasons (Return Reason, Disposition.in separate dim)

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 The supply value chain Representing the manufacturing process: raw materials converted to finished goods. Suplly-Side includes measurements of cont. Flow processes as well as the document-oriented processes seen on the Demand Side. different databases: purchase orders deliveries materials inventory process monitoring bill of materials finished goods inventory manufacturing plans

Hachim Haddouti, adv. DBMS & DW CSC5301, Ch5 Purchase orders Time, Part, Supplier, Deal Deliveries Time, Part, Supplier, Plant, Mode, Deal Materials inventory Time, Part, Plant Process monitoring Time, Part, Process, Plant Bill of materials Time, Part, Product Finished goods inventory Time, Product, Warehouse Manufacturing plans Time, Product The supply value chain different databases cont.: