Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 2MC
Which of the following is not a valid constraint type?
- a. PRIMARY KEYS
- b. UNIQUE
- c. CHECK
- d. FOREIGN KEY
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Which of the following is not a valid constraint type? ( refer to the tables in the JustLee Books database). a. PRIMARY KEYS b. UNIQUE c. CHECK d. FOREIGN KEY
What happens when a constraint is followed? Unique I Primary Key (ii), Default (iii), and Check (iv) Unique I Primary Key (ii), Default (iii), and Check (iv)
An index is automatically created for a FOREIGN KEY constraint.
Select one:
a. True
b. False
Chapter 4 Solutions
Oracle 12c: SQL
Ch. 4 - What is the difference between a PRIMARY KEY...Ch. 4 - How can you verify the constraints that exist for...Ch. 4 - A table can have a maximum of how many PRIMARY KEY...Ch. 4 - Which type of constraint can be used to make...Ch. 4 - Which type of constraint should you use to ensure...Ch. 4 - How is adding a NOT NULL constraint to an existing...Ch. 4 - When must you define constraints at the table...Ch. 4 - Prob. 8RQCh. 4 - What is the difference between disabling a...Ch. 4 - Prob. 10RQ
Ch. 4 - Prob. 1MCCh. 4 - Which of the following is not a valid constraint...Ch. 4 - Which of the following SQL statements is invalid...Ch. 4 - What is the maximum number of PRIMARY KEY...Ch. 4 - Prob. 5MCCh. 4 - How many NOT NULL constraints can be created at...Ch. 4 - The FOREIGN KEY constraint should be added to...Ch. 4 - What is the maximum number of columns you can...Ch. 4 - Which of the following commands can you use to...Ch. 4 - Prob. 10MCCh. 4 - In the initial creation of a table, if a UNIQUE...Ch. 4 - Which type of constraint should you use on a...Ch. 4 - Which of the following commands can be used to...Ch. 4 - Which of the following keywords allows the user to...Ch. 4 - Which of the following data dictionary objects...Ch. 4 - Which of the following types of constraints cant...Ch. 4 - Suppose you created a PRIMARY KEY constraint at...Ch. 4 - You’re creating a new table consisting of three...Ch. 4 - Which of the following types of restrictions can...Ch. 4 - Which of the following is the valid syntax for...Ch. 4 - Prob. 1HOACh. 4 - Prob. 2HOACh. 4 - Prob. 3HOACh. 4 - Add a column named Base_salary with a datatype of...Ch. 4 - Create a table named BOOK_STORES to include the...Ch. 4 - Add a constraint to make sure the Rep_ID value...Ch. 4 - Change the constraint created in Assignment #6 so...Ch. 4 - Create a table named REP_CONTRACTS containing the...Ch. 4 - Produce a list of information about all existing...Ch. 4 - Issue the commands to disable and then enable the...
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- Which of the following commands can you use to rename a constraint? RENAME ALTER CONSTRAINT MOVE NEW NAME None of the above commands can be used.arrow_forwardWhich of the following SQL statements is invalid and returns an error message? ALTER TABLE books ADD CONSTRAINT books_pubid_uk UNIQUE (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_pk PRIMARY KEY (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_nn NOT NULL (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_fk FOREIGN KEY (pubid) REFERENCES publisher (pubid); All of the above statements are invalid.arrow_forwardWhich of the following types of constraints cant be created at the table level? a. NOT NULL b. PRIMARY KEY c. CHECK d. FOREIGN KEY e. None of the above constraints can be created at the table level.arrow_forward
- When you don’t know the specific value to include in the criteria, you use a ____. a. limited query b. unfilled query c. tagged query d. parameter queryarrow_forwardWhich of the following commands can you use to rename a constraint? ( refer to the tables in the JustLee Books database). a. RENAME b. ALTER CONSTRAINT c. MOVE d. NEW NAME e. None of the above commands can be used.arrow_forwardMS SQL SERVER Write a statement to create a stored procedure named Find_Contact based on the Contacts table in question 1 A, which does the following: Accepts an input parameter named @FindMobile that has the data type varchar. IF MobileNo exists: Print the message “Mobile No for:” concatenated with the input parameter. IF MobileNo do not exists: Print the message “Do Not Exist” concatenated with the input parameter. Executes a SELECT statement on the table Contacts, passing the input parameter as part of the WHERE clause. Return the contact details that match the input parameter value.arrow_forward
- Which one of the following constraint is used along with the DROP COLUMN clause? O a. DISABLE CONSTRAINTS O b. ENABLE CONSTRAINTS O. CASACDE CONSTRAINTS O d. DROP CONSTRAINTS 1 40 DMarrow_forwardAre the following two clauses the same: constraint X primary key (Y, Z) and constraint X primarykey (Z, Y)?A) YesB) Noarrow_forward3. What is a DEFAULT constraint?arrow_forward
- Please 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_forward( Please answer this question immediately I do not have time ) Use the following table to answer the questions below: Table name: Books Column Name Role Data Type Length Constraint bookID Stores the ID of a book Number 5 Primary key bookTitle Stores the title of a book Varchar2 50 - bookISBN Stores the ISBN of a book Number 13 Cannot be null and duplicated publicationDate Store the publication date of a book Date - Cannot be null bookPrice Stores the price of a book Number 2,2 Cannot be null a. Write in SQL a command that creates the table Books according to the above description b. Write in SQL a statement that adds a new column named publisherID of type Char(10). This column should be defined as a foreign key that relates the table Books to the table Publisher c. Write in SQL a command that deletes the books that are published before 20-Aug-2010 d. Write a SQL query that displays the number of books that are published in the year 2018 e. Write in SQL a…arrow_forwardDomain 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_forward
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