Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 2RQ
Explain why the following command would create an error and what changes could be made to fix the error:
SELECT V_CODE, SUM(P_QOH) FROM PRODUCT;
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Chapter 7 Solutions
Database Systems: Design, Implementation, & Management
Ch. 7 - Prob. 1RQCh. 7 - Explain why the following command would create an...Ch. 7 - Prob. 3RQCh. 7 - Explain why it might be more appropriate to...Ch. 7 - What is the difference between a column constraint...Ch. 7 - What are referential constraint actions?Ch. 7 - Rewrite the following WHERE clause without the use...Ch. 7 - Explain the difference between an ORDER BY clause...Ch. 7 - Explain why the following two commands produce...Ch. 7 - What is the difference between the COUNT aggregate...
Ch. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Write the SQL code that will create the table...Ch. 7 - Having created the table structure in Problem 1,...Ch. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Write the SQL code to change the job code to 501...Ch. 7 - Write the SQL code to delete the row for William...Ch. 7 - Write the SQL code that will restore the data to...Ch. 7 - Write the SQL code to create a copy of EMP_1,...Ch. 7 - Write the SQL code to change the EMP_PCT value to...Ch. 7 - Using a single command sequence, write the SQL...Ch. 7 - Prob. 11PCh. 7 - Write the SQL code that will change the PROJ_NUM...Ch. 7 - Write the two SQL command sequences required to:...Ch. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Using the EMPLOYEE, JOB, and PROJECT tables in the...Ch. 7 - Write the SQL code that will produce the same...Ch. 7 - Write the SQL code to find the average bonus...Ch. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Write the SQL code to calculate the ASSIGN_CHARGE...Ch. 7 - Using the data in the ASSIGNMENT table, write the...Ch. 7 - Prob. 23PCh. 7 - Write the SQL code to generate the total hours...Ch. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Generate a listing of all purchases made by the...Ch. 7 - Using the output shown in Figure P7.29 as your...Ch. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Use a query to compute the average purchase amount...Ch. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Using the results of the query created in Problem...Ch. 7 - Create a query to find the balance characteristics...Ch. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Write a query to display the SKU (stock keeping...Ch. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62PCh. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - Prob. 65PCh. 7 - Prob. 66PCh. 7 - Prob. 67PCh. 7 - Prob. 68PCh. 7 - Prob. 69PCh. 7 - Prob. 70PCh. 7 - Prob. 71PCh. 7 - Prob. 72PCh. 7 - Prob. 73PCh. 7 - Prob. 74PCh. 7 - Prob. 75PCh. 7 - Prob. 76PCh. 7 - Prob. 77PCh. 7 - Prob. 78PCh. 7 - Prob. 79PCh. 7 - Prob. 80PCh. 7 - Prob. 81PCh. 7 - Prob. 82PCh. 7 - Prob. 83PCh. 7 - Prob. 84PCh. 7 - Prob. 85PCh. 7 - Prob. 86PCh. 7 - Prob. 87PCh. 7 - Prob. 88PCh. 7 - Prob. 89PCh. 7 - Prob. 90PCh. 7 - Prob. 91PCh. 7 - Prob. 92PCh. 7 - Prob. 93PCh. 7 - Prob. 94PCh. 7 - Prob. 95PCh. 7 - Write the SQL code to create the table structures...Ch. 7 - The following tables provide a very small portion...Ch. 7 - Write the SQL command to save the rows inserted in...Ch. 7 - Write the SQL command to change the movie year for...Ch. 7 - Prob. 100CCh. 7 - Prob. 101CCh. 7 - Prob. 102CCh. 7 - Prob. 103CCh. 7 - Prob. 104CCh. 7 - Prob. 105CCh. 7 - Prob. 106CCh. 7 - Prob. 107CCh. 7 - Prob. 108CCh. 7 - Prob. 109CCh. 7 - Prob. 110CCh. 7 - Prob. 111CCh. 7 - Prob. 112CCh. 7 - Prob. 113CCh. 7 - Prob. 114CCh. 7 - Prob. 115CCh. 7 - Prob. 116CCh. 7 - Prob. 117CCh. 7 - Prob. 118CCh. 7 - Prob. 119CCh. 7 - Prob. 120CCh. 7 - Prob. 121CCh. 7 - Prob. 122CCh. 7 - Prob. 123CCh. 7 - Prob. 124CCh. 7 - Write a query to display the movie number, movie...
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- Fill in the blank question- Only answer needed without explanation Q. To view superblock information __________ command is used.arrow_forwardI would like to change the quantity ( all the 5 ) as well as the first two rows for "Bradlee Esparza " to the correct numbers/descriptions. I have been struggling to find the right insert command to be able to change those values.arrow_forwardUse the "uniq -c" command to sort and summarize the total occurrences of sudo access by month and user. Submit - Screen shot of your syntax and output showing total occurrences by month and user of sudo access, for example: 112 Apr msmith 101 Mar admin What command should we use??arrow_forward
- Correct command perform:-arrow_forwardI need help with creating the SQL statement for the instructions below. Create the following 2 tables with columns and constraints Table Lab4program_xxxx has 3 columns: code is varchar(5) and the primar key, name is varchar(20), tel varchar(20). Table Lab4course_xxxx has 3 columns: cid is int, and the primary key, name is varchar(20), credits is int, mycode is a foreign key reference to your Lab4program table. Table Lab4program_xxxx has 3 columns: code is varchar(5) and the primar key, name is varchar(20), tel varchar(20). Table Lab4course_xxxx has 3 columns: cid is int, and the primary key, name is varchar(20), credits is int, mycode is a foreign key reference to your Lab4program table.arrow_forwardThe following code would include: CREATE OR REPLACE TRIGGER TRG_LINE_PROD AFTER INSERT ON LINE FOR EACH ROW BEGIN            UPDATE      PRODUCT            SET               P_QOH = P_QOH - :NEW.LINE_UNITS            WHERE       PRODUCT.P_CODE = LINE.P_CODE; END; Group of answer choices  A) Create a trigger named trg_line_prod that will automatically increase the product quantity on hand for each product sold after a new LINE row is added.  B) Create a trigger named trg_line_prod that will automatically update the product quantity on hand for each product sold after the LINE table is modified.  C) Create a trigger named trg_line_prod that will automatically reduce the product quantity on hand for each product sold after a new LINE row is added.  D) This query will not work as it has syntax errors.arrow_forward
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