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# Premiere Products Exercise Chapter 9 | Complete Solution

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Premiere Products Exercises

For the following exercises, you will answer problems and questions from management at Premiere Products. You do not use the Premiere Products database for any of these exercises.

1. Fragment the Customer table so that customers of rep 20 form a fragment named CustomerRep20, customersof rep 35 form a fragment named CustomerRep35, and customers of rep 65 form a fragment named CustomerRep65. (Include all fields from the Customer table in each fragment.) In addition, you need to fragment the Orders table so that orders are distributed and stored with the customers that placed the orders. For example, fragment OrdersRep20 consists of those orders placed by customers of rep 20. Write the SQL-type statements to create these fragments.

2. Create a class diagram for the Premiere Products database, as shown in Chapter 1, Figure 1-5. If you need to make any assumptions in preparing the diagram, document those assumptions.

3. A user queries the Part table in the Premiere Products database over the company intranet. Assume the Part table contains 5,000 rows, each row is 1,000 bits long, the access delay is 2.5 seconds, the transmission rate is 50,000 bits per second, and only 20 of the 5,000 rows in the Part table satisfy the query conditions. Calculate the total communication time required for this query based on retrieving all table rows one row at a time, then calculate the total communication time required based on retrieving the 20 rows that satisfy the query conditions in a single message.

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## [Solved] Premiere Products Exercise Chapter 9 | Complete Solution

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1. Fragment the Customer table so that customers of rep 20 form a fragment named CustomerRep20, customersof rep 35 form a fragment named C...

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Communication time = access delay +(data volume / transmission rate)
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### Premiere Products Exercise Chapter 9 | Complete Solution

1. Fragment the Customer table so that customers of rep 20 form a fragment named CustomerRep20, customersof rep 35 form a fragment named CustomerRep35, and customers of rep 65 form a fragment named CustomerRep65. (Include ...

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