8.28 Show relational algebra expressions for a. the names of all salespeople b. the names of all..

08 Jun 8.28 Show relational algebra expressions for a. the names of all salespeople b. the names of all..

Posted at 05:21h in Essay Writing Services by Blogger

Question

8.28 Show relational algebra expressions for a. the names of all salespeople b. the names of all salespeople having an ORDER row c. the names of salespeople not having an ORDER row d. the names of salespeople having an order with Abernathy Construction e. the salaries of salespeople having an order with Abernathy Construction f. the city of all CUSTOMERS having an order with salesperson Jones g. the names of all sales people with the names of customers who have ordered from them. Include salespeople who have no orders. Name Salary Abel 120,000 Baker 42,000 Jones 36,000 Murphy 50,000 Zenith 118,000 Kobad 34,000 (SALESPEOPLE) Number CustName SalespersonName Amount 100 Abernathy Construction Zenith 560 200 Abernathy Construction Jones 1800 300 Manchester Lumber Abel 480 400 Amalgamated Housing Abel 2500 500 Abernathy Construction Murphy 6000 600 Tri-city Builders Abel 700 700 Manchester Lumber Jones 150 (ORDER) Name City IndustryType Abernathy Construction Willow B Manchester Lumber Manchester F Tri-city Builders Memphis B Amalgmated Housing Memphis B (CUSTOMER)

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