Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Task 7: Create a procedure to add a row to the INVOICES table.
CALL ADD_INVOICE('00001', '2021-11-20', '294') SELECT * FROM INVOICES WHERE INVOICE_NUM = '00001'
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- Task 8: Create the UPDATE_INVOICE procedure to change the date of the invoice whose number is stored in I_INVOICE_NUM to the date currently found in I_INVOICE_DATE.arrow_forwardWrite a SELECT statement that returns all rows with salary, last name, street address and ZIP code (SALARY, LAST_NAME, STREET, ZIP_CODE) from the EMPLOYEE and ADDRESS tables, sorted by SALARY from largest to smallest. STREET and ZIP_CODE are in the ADDRESS table, while the other fields are in the EMPLOYEE table. The common key is EMPLOYEE_ID.arrow_forwardLab 8-1: KimTay Pet Supplies Task 6: Create the GET_INVOICE_DATE procedure to obtain the customer ID, first and last names of the customer, and the invoice date for the invoice whose number currently is stored in I_INVOICE_NUM. Place these values in the variables I_CUST_ID, I_CUST_NAME, and I_INVOICE_DATE respectively. When the procedure is called it should output the contents of I_CUST_ID, I_CUST_NAME, and I_INVOICE_DATE. IN SQL CODE. CUSTOMER CUST_ID FIRST_NAME LAST_NAME ADDRESS CITY STATE POSTAL EMAIL BALANCE CREDIT_LIMIT REP_ID 125 Joey Smith 17 Fourth St Cody WY 82414 jsmith17@example.com 80.68 500.00 05 182 Billy Rufton 21 Simple Cir Garland WY 82435 billyruff@example.com 43.13 750.00 10 227 Sandra Pincher 53 Verde Ln Powell WY 82440 spinch2@example.com 156.38 500.00 15 294 Samantha Smith 14 Rock Ln Ralston WY 82440 ssmith5@example.com 58.60 500.00 10 314 Tom Rascal 1 Rascal Farm Rd Cody WY 82414 trascal3@example.com 17.25 250.00 15 375 Melanie Jackson 42…arrow_forward
- which constraint ensure the values in a column are all different? a) Foreign Key b) Restrict c) Unique d) Cascadearrow_forwardWEEK 3 ASSIGNMENT Complete the following exercise: Using the student table you created in week two insert four rows into your table. Update the first name to “Luke” and last name to “Plew” for one of the rows you inserted above. Delete the row you updated above. Explain how you insert data in one table from another table. Your answer should be a minimum of three sentences in length.arrow_forwardWEEK 2 ASSIGNMENT Complete the following exercise: Using the student table you created in week one insert four rows into your table. Update the first name to “Luke” and last name to “Plew” for one of the rows you inserted above. Delete the row you updated above. Explain how you insert data in one table from another table. Your answer should be a minimum of three sentences in length.arrow_forward
- From 16 to 19arrow_forwardWhich function does the PRIMARY KEY clause perform in table creation? It ensures that’s non-NULL values can act as unique keys. It ensures that non-NULL values can as candidate keys. It ensures that each value in row is unique. It ensures that each value in the column is uniquearrow_forwardTask 1: The Finance team wants to calculate a VAT (8%) on the amount of the stay reservations in the database. However, the team wants to calculate the VAT after the discounts are applied on the prices. In addition, it is important to remember if there is no discount/offers, then the value is NULL in the TRAVELS table. Create a procedure called VATCalculator to calculate the VAT amount and return with the corresponding travel ID. In addition, execute the procedure to account for NULL values and send the respective result to the team. The VAT value should be rounded to 2 decimals. Create a procedure to calculate the VAT. 1 Make sure you are using the following format to change the delimiter for the procedure: DELIMITER $$-- statements --END $$DELIMITER ; Test QueryCALL VATCalculator() Expected Results TRAVEL_ID VAT 5001 1.24 5002 1.64 5003 0.99 5004 2.12 5005 0.89 5006 1.05 5007 0.30 5008 1.51 5009 1.08 5010 1.64arrow_forward
- Task 12: When deleting a customer, subtract the balance multiplied by the sales rep’s commission rate from the commission for the corresponding sales rep.arrow_forwardTask 8: Create the UPDATE_INVOICE procedure to change the date of the invoice whose number is stored in I_INVOICE_NUM to the date currently found in I_INVOICE_DATE.arrow_forwardQ1. Write a SELECT statement that returns these columns from the Invoices table: The invoice _total column A column that uses the ROUND function to return the invoice_total column with 1 decimal digit A column that uses the ROUND function to return the invoice_total column with no decimal digits Q1. Write a SELECT statement that returns these columns from the Invoices table: • The invoice_total column • A column that uses the ROUND function to return the invoice_total column with 1 decimal digit • A column that uses the ROUND function to return the invoice_total column with no decimal digits invoice_total one digit 3813.33 3813.3 zero_digits 3813arrow_forward
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