Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 4, Problem 6MC
How many NOT NULL constraints can be created at the table level by using the CREATE TABLE command?
- a. 0
- b. 1
- c. 12
- d. 30
- e. 255
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How many NOT NULL constraints can be created at the table level by using the CREATE TABLE command? ( refer to the tables in the JustLee Books database).
a. 0 b. 1 c. 12 d. 30 e. 255
assume that a database has a table named Stock, with thefollowing columns:Column Name TypeTrading_Symbol nchar(10)Company_Name nchar(25)Num_Shares intPurchase_Price moneySelling_Price money Write a Select statement that returns all the columns from the rows where Trading_Symbol starts with "SU".
Which of the following types of constraints can’t be created at the table level? ( refer to the tables in the JustLee Books database). a. NOT NULL
b. PRIMARY KEY
c. CHECK
d. FOREIGN KEY
e. None of the above constraints can be created at the table level
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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- What is the difference between disabling a constraint and dropping a constraint?arrow_forwardDelete the index named ITEM_INDEX3.arrow_forwardWhich of the following commands can be used to enable a disabled constraint? a. ALTER TABLE MODIFY b. ALTER TABLE ADD c. ALTER TABLE DISABLE d. ALTER TABLE ENABLEarrow_forward
- In the initial creation of a table, if a UNIQUE constraint is included for a composite column that requires the combination of entries in the specified columns to be unique, which of the following statements is correct? a. The constraint can be created only with the ALTER TABLE command. b. The constraint can be created only with the table-level approach. c. The constraint can be created only with the column-level approach. d. The constraint can be created only with the ALTER TABLE MODIFY command.arrow_forwardSuppose you created a PRIMARY KEY constraint at the same time you created a table and later decide to name the constraint. Which of the following commands can you use to change the constraint’s name? ALTER TABLE … MODIFY ALTER TABLE … ADD ALTER TABLE … DISABLE None of the above commands can be used.arrow_forwardassume that a database has a table named Stock, with thefollowing columns:Column Name TypeTrading_Symbol nchar(10)Company_Name nchar(25)Num_Shares intPurchase_Price moneySelling_Price money Write a Select statement that returns the Trading_Symbol column and the Num_ Shares column only from the rows where Selling_Price is greater than Purchase_ Price and Num_Shares is greater than 100. The results should be sorted by the Num_Shares column in ascending order.arrow_forward
- What is the maximum number of columns you can define as a primary key when using the column-level approach to creating a table? ( refer to the tables in the JustLee Books database). a. 0 b. 1 c. 30 d. 255arrow_forwardassume that a database has a table named Stock, with thefollowing columns:Column Name TypeTrading_Symbol nchar(10)Company_Name nchar(25)Num_Shares intPurchase_Price moneySelling_Price money Write a Select statement that returns the Trading_Symbol column only from the rows where Selling_Price is greater than Purchase_Price and Num_Shares is greater than 100.arrow_forwardYou’re creating a new table consisting of three columns: Col1, Col2, and Col3. Col1 should be the primary key and can’t have any NULL values, and each entry should be unique. Col3 must not contain any NULL values either. How many total constraints do you have to create? ( refer to the tables in the JustLee Books database). a. 1 b. 2 c. 3 d. 4arrow_forward
- PROBLEM: Create a table named BOOK_STORES to include the columns listed in the following chart. Column Name Store_ID Name Contact Rep_ID Datatype NUMBER (8) VARCHAR2(30) VARCHAR2(30) VARCHAR2(5) Constraint Comments PRIMARY KEY column Should be UNIQUE and NOT NULL : INSTRUCTIONS: Submit the complete code on doc file, run and also submit the snapshot of the result. You can paste the screen shots(2) on a MS. Word doc.arrow_forwardWhich of the following data dictionary objects should be used to view information about the constraints in a database? ( refer to the tables in the JustLee Books database). a. USER_TABLES b. USER_RULES c. USER_COLUMNS d. USER_CONSTRAINTS e. None of the above objects should be usedarrow_forwardCreate a table in your own database using the following statement. CREATE TABLE DateRange (DateID INT IDENTITY, DateValue DATE, DayOfWeek SMALLINT, Week SMALLINT, Month SMALLINT, Quarter SMALLINT, Year SMALLINT ); Write a stored procedure that accepts two parameters: A starting date The number of the consecutive dates beginning with the starting date The stored procedure then inserts data into all columns of the DateRange table according to the two provided parameters.arrow_forward
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