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Unformatted text preview: $210 Hammer Naomi Smith $15 $12 c. π MANAGER ( ( π STORE_ID (Stores) - π STORE_ID (Sales) ) Stores ) (4 pts) MANAGER d. (5 pts) S1 = ρ (Sales1(DATE1, PRODUCT_ID1, STORE_ID1, QUANTITY1, PRICE1),Sales) S2 = ρ (Sales2(DATE2, PRODUCT_ID2, STORE_ID2, QUANTITY2, PRICE2),Sales) π PRODUCTID1,PRICE1,PRICE2 ( σ DATE1 <> DATE2 ( σ PRODUCT_ID1=PRODUCT_ID2 S1 × S2 ) ) PRODUCT_ID1 PRICE1 PRICE2 43121 $15 $12 64221 $0.11 $0.15 10...
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This note was uploaded on 08/26/2009 for the course CS 186 taught by Professor Staff during the Spring '08 term at University of California, Berkeley.
- Spring '08