Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 8, Problem 8RQ
What is the difference between using a subquery with a CREATE TABLE command and using a subquery with an INSERT command?
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THIS MODULE IS ABOUT SUBQUERIES, SO YOU MUST USE SUBQUERIES INSTEAD OF TABLE JOINS IN THISASSIGNMENT.
Two tables are created:
Horse with columns:
ID - integer, primary key
RegisteredName - variable-length string
Student with columns:
ID - integer, primary key
FirstName - variable-length string
LastName - variable-length string
Create the LessonSchedule table with columns:
HorseID - integer with range 0 to 65 thousand, not NULL, foreign key references Horse(ID)
StudentID - integer with range 0 to 65 thousand, foreign key references Student(ID)
LessonDateTime - date/time, not NULL
Primary key is (HorseID, LessonDateTime)
If a row is deleted from Horse, the rows with the same horse ID should be deleted from LessonSchedule automatically.
If a row is deleted from Student, the same student IDs should be set to NULL in LessonSchedule automatically.
Notes: Table and column names are case sensitive in the auto-grader. Your SQL code does not display any results in Develop mode. Use Submit mode to test your code.
Two tables are created:
Horse with columns:
ID - integer, primary key
RegisteredName - variable-length string
Student with columns:
ID - integer, primary key
FirstName - variable-length string
LastName - variable-length string
Create the LessonSchedule table with columns:
HorseID - integer with range 0 to 65 thousand, not NULL, foreign key references Horse(ID)
StudentID - integer with range 0 to 65 thousand, foreign key references Student(ID)
LessonDateTime - date/time, not NULL
Primary key is (HorseID, LessonDateTime)
If a row is deleted from Horse, the rows with the same horse ID should be deleted from LessonSchedule automatically.
If a row is deleted from Student, the same student IDs should be set to NULL in LessonSchedule automatically.
Chapter 8 Solutions
Database Systems: Design, Implementation, & Management
Ch. 8 - Prob. 1RQCh. 8 - Explain why it might be more appropriate to...Ch. 8 - What is the difference between a column constraint...Ch. 8 - What are referential constraint actions?Ch. 8 - What is the purpose of a CHECK constraint?Ch. 8 - Explain when an ALTER TABLE command might be...Ch. 8 - What is the difference between an INSERT command...Ch. 8 - What is the difference between using a subquery...Ch. 8 - What is the difference between a view and a...Ch. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Write the SQL code that will create only the table...Ch. 8 - Having created the table structure in Problem 1,...Ch. 8 - Prob. 3PCh. 8 - Write the SQL code that will save the changes made...Ch. 8 - Write the SQL code to change the job code to 501...Ch. 8 - Write the SQL code to delete the row for William...Ch. 8 - Write the SQL code to create a copy of EMP_1,...Ch. 8 - Using the EMP_2 table, write the SQL code that...Ch. 8 - Using the EMP_2 table, write the SQL code to...Ch. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Create the CUSTOMER table structure illustrated in...Ch. 8 - Create the INVOICE table structure illustrated in...Ch. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Create an Oracle sequence named CUST_NUM_SEQ to...Ch. 8 - Create an Oracle sequence named INV_NUM_SEQ to...Ch. 8 - Prob. 22PCh. 8 - Modify the CUSTOMER table to include the customers...Ch. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Create a trigger named trg_updatecustbalance to...Ch. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - Write a trigger to update the customer balance...Ch. 8 - Prob. 30PCh. 8 - Create a trigger named trg_line_total to write the...Ch. 8 - Create a trigger named trg_line_prod that...Ch. 8 - Create a stored procedure named prc_inv_amounts to...Ch. 8 - Create a procedure named prc_cus_balance_update...Ch. 8 - Modify the MODEL table to add the attribute and...Ch. 8 - Prob. 36PCh. 8 - Modify the CHARTER table to add the attributes...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Prob. 43PCh. 8 - Create a trigger named trg_char_hours that...Ch. 8 - Create a trigger named trg_pic_hours that...Ch. 8 - Create a trigger named trg_cust_balance that...Ch. 8 - Write the SQL code to create the table structures...Ch. 8 - The following tables provide a very small portion...Ch. 8 - For Questions 49-63, use the tables that were...Ch. 8 - Prob. 50PCh. 8 - Write a single SQL command to increase all price...Ch. 8 - Alter the DETAILRENTAL table to include a derived...Ch. 8 - Update the DETAILRENTAL table to set the values in...Ch. 8 - Alter the VIDEO table to include an attribute...Ch. 8 - Update the VID_STATUS attribute of the VIDEO table...Ch. 8 - Alter the PRICE table to include an attribute...Ch. 8 - Prob. 57PCh. 8 - Prob. 60P
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