. Consider the following relational schema: Employee (EmpNo, EmpName, Salary, EmpPhone, EmpCommRate, ManagerId*) Order (OrdNo, OrdDate, OrdName, EmpNo*) OrdLine (OrdNo*, ProNo*, Quantity) Product (ProNo, ProName, ProPrice, ProQuantityOn Hand) Create a trigger to propagate updates to the Product table after an operation of quantity update on the OrdLine table. You have to create a trigger on OrdLine table For Update Event. The trigger will perform following function: For quantity updates on OrdLine Table, the trigger should decrease the Product quantity on hand in Product table by the difference between the new order quantity minus the old order quantity. [ ProQuantityOn Hand = New Order Quantity – Old Order Quantity ]
. Consider the following relational schema: Employee (EmpNo, EmpName, Salary, EmpPhone, EmpCommRate, ManagerId*) Order (OrdNo, OrdDate, OrdName, EmpNo*) OrdLine (OrdNo*, ProNo*, Quantity) Product (ProNo, ProName, ProPrice, ProQuantityOn Hand) Create a trigger to propagate updates to the Product table after an operation of quantity update on the OrdLine table. You have to create a trigger on OrdLine table For Update Event. The trigger will perform following function: For quantity updates on OrdLine Table, the trigger should decrease the Product quantity on hand in Product table by the difference between the new order quantity minus the old order quantity. [ ProQuantityOn Hand = New Order Quantity – Old Order Quantity ]
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1. Consider the following relational schema: Employee (EmpNo, EmpName, Salary, EmpPhone, EmpCommRate, ManagerId*) Order (OrdNo, OrdDate, OrdName, EmpNo*) OrdLine (OrdNo*, ProNo*, Quantity) Product (ProNo, ProName, ProPrice, ProQuantityOn Hand) Create a trigger to propagate updates to the Product table after an operation of quantity update on the OrdLine table. You have to create a trigger on OrdLine table For Update Event. The trigger will perform following function: For quantity updates on OrdLine Table, the trigger should decrease the Product quantity on hand in Product table by the difference between the new order quantity minus the old order quantity. [ ProQuantityOn Hand = New Order Quantity – Old Order Quantity ]
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