Unit 4 Research Project. Eddie S. Jackson. Kaplan University. IT526: SQL Query Design. Jon Walter McKeeby, DSc, MBA

Transcription

1 Running head: UNIT 4 RESEARCH PROJECT 1 Unit 4 Research Project Eddie S. Jackson Kaplan University IT526: SQL Query Design Jon Walter McKeeby, DSc, MBA 07/15/2014

2 UNIT 4 RESEARCH PROJECT 2 Part 1. Your database. (90 points) Unit 4 Research Project a. Pick two tables that have a 1:M relationship from the database you designed in your IT520 or IT525 course. If you have not taken IT520 or IT525, use the sample project in the Unit4.DatabaseDesign document in Doc Sharing. Show the data dictionary and sample data for those two tables. Using your data dictionary as a template, give the CREATE TABLE statements for those two tables, including Primary Key and Foreign Key constraints. (30) The two tables I have selected are CUSTOMER and INVOICE, a one to many relationship.

3 UNIT 4 RESEARCH PROJECT 3 The data dictionary for the customer table is Field Description Data Type Allows Nulls Key The unique ID of the Primary Customer_ID customer INTEGER Key First_Name The first name of the customer (20) Last_Name The last name of the customer (30) Middle_Initial The middle initial of the customer (1) Allow Phone The phone number of the customer The address of the customer (20) Allows (40) Allows Address The street address of customer (40) City The city where the customer lives in (40) State State where the customer lives CHAR (2) Zip The state zip code of the customer CHAR (5) The sample data for the customer table is Custo mer_ ID First_ Name Last_ Nam e Midd le_ini tial Phone Address City Stat e 1 Lee Moss S lm@hotma 12 Marvel Orlando FL 1214 il.com Ln 2 Janis Jones A JJ12@gmai 452 Center Phoenix AR 2184 l.com Blvd 3 Jeff Moor O JMor@yah 6754 Pine Atlanta GA e 2846 oo.com Ave 4 Bob Nye E MrBob@g 111 Point Bangor ME 2224 mail.com 5 Larry Biggs N LarryBigm 432 Austin TX

4 UNIT 4 RESEARCH PROJECT an@aol.co m 6 Amy Pond D DrWho@y 1628 ahoo.com 7 Mike Smith NUL MSmith@b L 8934 ellsouth.net 8 Tyler Crew s E Tom Stone M Vic Johns A om DigiTech@ hotmail.co m NULL Ingenuity 781 Back Rd Dallas TX 421 Washington Ave 986 Wellinton Dr 381 Christian Ave 2220 Marco St Black Raleigh Columbi a Nashvill e AL NC SC TN The data dictionary for the invoice table is Field Description Data Type Allows Nulls Key Primary Invoice_ID The unique ID of the invoice INTEGER Key Date The date the invoice is issued DATE Subtotal The subtotal of purchased items (30) Tax The tax levied (2) Allow Total The total amount of purchase with tax (20) Customer_ID Unique ID of customer INTEGER Foreign Key The sample data for the invoice table is Invoice_ID Date Subtotal Tax Total Customer_ID 1 06/02/ /03/ /04/ /05/ /06/

5 UNIT 4 RESEARCH PROJECT /07/ /07/ /08/ NULL /09/ /10/ I create a database CREATE DATABASE robot; I select the database USE robot; The CREATE TABLE statements are (Ben-Gan, Sarka, & Talmage, 2013).

6 UNIT 4 RESEARCH PROJECT 6 b. Give INSERT statements that would insert at least five rows of data into each table. (10) The INSERT for the Customer table The INSERT for the Invoice table (W3Schools, n.d.).

7 UNIT 4 RESEARCH PROJECT 7 c. Show the results of SELECT * FROM <tablename> for each of your tables. Paste each result set into your Assignment Word document. Then paste into Word a screen image of the two result sets. The Object Explorer pane should show the Databases folder expanded to show your database, and its Tables folder expanded to show your two tables. [Eliminate white space in SSMS so the characters in the screen image are readable without magnification. Use ALT+PrintScreen to get an image of only SSMS and not the entire desktop.] (10) The Customer table The Invoice Table d. Create a view for your database. Explain the purpose of the view, i.e., state why you feel the view is necessary. Give the CREATE VIEW code for your view. (15) This view created to reduce the complexity of the frequently used invoice table. Normally, the invoice table has possible values for Invoice_ID, Date, Subtotal, Tax, Total, and Customer_ID. For the use of the invoice itself, all that is really needed is the Invoice_ID, Date, and Total, thus the below has been created.

8 UNIT 4 RESEARCH PROJECT 8 e. Update data in your database. Explain the purpose of the update. (10) An update was required to the robot database due to Florida increasing its sales tax from 6 percent to seven percent. To make this change, the following UPDATE was created: f. Show the results of SELECT * FROM <tablename> for the table(s) that have updated data. (2.5) These are the results from the above update (the updated tax rows are outlined):

9 UNIT 4 RESEARCH PROJECT 9 g. Delete one or more rows of data from a table in your database. Explain the purpose of the delete. (10) Due to a recent complaint from customer Lee Moss, the Robot Emporium is refunding the customer s purchases, and deleting the records from the database. The following shows the delete. The invoice ID s that must be deleted are invoice numbers 1 and 2. h. Show the results of SELECT * FROM <tablename> for the table that had a row deleted. (2.5)

10 UNIT 4 RESEARCH PROJECT 10 Part 2. Inline Table-Valued Function (10 points) The following view returns the total number of orders for each customer: Create an inline table-valued function named Sales.fn_NumOrdersByCustomer that returns the custid and the total number of orders for a specified custid.the Function (Microsoft, 2014).

11 UNIT 4 RESEARCH PROJECT 11 The returned output for the specific CustID 2 is

12 UNIT 4 RESEARCH PROJECT 12 References Ben-Gan, I., Sarka, D., & Talmage, R. (2013). Training Kit (Exam ): Querying Microsoft SQL Server Sabastopol, CA: O'Reilly Media, Inc. Microsoft. (2014). CREATE FUNCTION (Transact-SQL). Retrieved from W3Schools. (n.d.). SQL INSERT INTO Statement. Retrieved from /sql/sql_insert.asp