Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 8, Problem 5RQ
What is the purpose of a CHECK constraint?
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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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- What is the difference between a PRIMARY KEY constraint and a UNIQUE constraint?arrow_forwardPlease help with the follwoing: No staff member may have a salary that exceeds $100,000.00 This is an example of: Select one: a. NULL Constraint b. None of the mentioned c. UNIQUE Constraint d. CHECK Constraintarrow_forwardWrite the following constraint in correct form with a number for the RHS. Supervisory labor hours (SL) can be no more the one-fourth the amount of Factory Labor (FL) hours.arrow_forward
- Domain Constraints means violations in size only Select one: O True O False Key constraint means violation when the primary key value is repeated Select one: O True O Falsearrow_forwardWhen the employee salary must not be greater than JD. 2000 This is alan Key constraint a O Domain Constraint b O Referential Integrity constraintcO Entity Constraint dOarrow_forwardhttps://sqliteonline.com/ : Program link The first requirement: Using the SQL language, transform the following entity model into tables in the database. Entity Manger contains: M-name The name of the manager. M-ID and manager number.The department entity contains: D-name The name of the department. D-ID and department number.Create constraint master key name of the manager when creating the Manger table.Creating the foreign key constraint The name of the manager when creating the Department table. The second requirement: After creating the tables and specifying the primary and foreign key, do the following: * Add a column D_loc to the Department table, specifying the type of column.* Remove the column named M_name from the Manger table* Change the name of the department table to Dep Please:: ******* ATTACH A PICTURE OF THE CODES USED AND PICTURE OF THE PROGRAM SCREEN *******arrow_forward
- What is the process of following a constraint? I Unique (ii) Primary Key (iii) Default (iv) Check? I Unique (ii) Primary Key (iii) Default (iv) Check?arrow_forwardA constraint is a limit that is placed on the data. Select one: True Falsearrow_forwardWhich type of constraint can be used to make certain the category for a book is included when a new book is added to inventory?arrow_forward
- When must you define constraints at the table level rather than the column level?arrow_forwardWhat are referential constraint actions?arrow_forwardProblems 2932 are based on the following query: SELECT CUS_CODE, MAX(LINE_UNITSLINE_PRICE) FROM CUSTOMER NATURAL JOIN INVOICE NATURAL JOIN LINE WHERE CUS_AREACODE = '615' GROUP BY CUS_CODE; How would you rewrite the query to ensure that the index you created in Problem 31 is used?arrow_forward
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