Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 3, Problem 16MC
Which of the following commands creates a new table containing two columns?
- a. CREATE TABLE newname (coll DATE, col2 VARCHAR2);
- b. CREATE TABLE newname AS (SELECT title, retail, cost FROM books);
- c. CREATE TABLE newname (col1, co12);
- d. CREATE TABLE newname (col1 DATE DEFAULT SYSDATE, co12 VARCHAR2 (1));
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Which of the following commands creates a new table containing two columns?a. CREATE TABLE newname (coll DATE, col2 VARCHAR2);b. CREATE TABLE newname AS (SELECT title, retail, cost FROM books);c. CREATE TABLEnewname (coll, col2);d. CREATE TABLE newname (coll DATE DEFAULT SYSDATE, col2 VARCHAR2 (1));
Which of the following commands drops any columns marked as unused from the SECUSTOMERORDERS table?a. DROP COLUMN FROM secustomerorders WHERE column_status = UNUSED;b. ALTER TABLE secustomerorders DROP UNUSED COLUMNS;c. ALTER TABLE secustomerorders DROP (unused);d. DROP UNUSED COLUMNS;
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Chapter 3 Solutions
Oracle 12c: SQL
Ch. 3 - Which command is used to create a table based on...Ch. 3 - Prob. 2RQCh. 3 - What guidelines should you follow when naming...Ch. 3 - What is the difference between dropping a column...Ch. 3 - Prob. 5RQCh. 3 - What happens to the existing rows of a table if...Ch. 3 - Explain the difference between truncating a table...Ch. 3 - Prob. 8RQCh. 3 - What happens if you try to decrease the scale or...Ch. 3 - Are a table and the data contained in the table...
Ch. 3 - Which of the following is a correct statement?
You...Ch. 3 - Prob. 2MCCh. 3 - Which of the following is not a correct...Ch. 3 - Which of the following is not a valid SQL...Ch. 3 - Which of the following is true? a. If you truncate...Ch. 3 - Which of the following commands creates a new...Ch. 3 - Which of the following commands drops any columns...Ch. 3 - Which of the following statements is correct?
A...Ch. 3 - Which of the following commands removes all data...Ch. 3 - Which of the following commands changes a table’s...Ch. 3 - Prob. 11MCCh. 3 - Which of the following is not a valid...Ch. 3 - Which of the following characters can be used in a...Ch. 3 - Which of the following is true?
All data in a...Ch. 3 - Prob. 15MCCh. 3 - Which of the following commands creates a new...Ch. 3 - Which of the following is a valid table name? a....Ch. 3 - Prob. 18MCCh. 3 - Which object in the data dictionary enables you to...Ch. 3 - Prob. 20MCCh. 3 - Create a new table containing the category code...Ch. 3 - Create a new table containing these four columns:...Ch. 3 - Add two columns to the EMPLOYEES table. One...Ch. 3 - Modify the Job_class column of the EMPLOYEES table...Ch. 3 - Prob. 5HOACh. 3 - Rename the EMPLOYEES table as JL_EMPS.
Ch. 3 - Create a new table containing these four columns...Ch. 3 - Prob. 8HOACh. 3 - Truncate the BOOK_PRICING table, and then verify...Ch. 3 - Delete the BOOK_PRICING table permanently so that...
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