Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 17MC
Which of the following is a valid table name?
- a. 9NEWTABLE
- b. DATE9
- c. NEW”TABLE
- d. None of the above are valid table names.
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Which of the following statements is valid?
a. DROP table_name;
b. DELETE TABLE table_name;
c. UPDATE TABLE table_name SET col1 = new_value;
d. ALTER TABLE table_name MODIFY col1 CHAR(10);
e. All of the above.
f. None of the above.
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Which of the following is a valid table name? (refer to the tables in the JustLee Books database)a. 9NEWTABLEb. DATE9c. NEW”TABLEd. None of the above are valid table names.
Which of the following characters can be used in a table name?a. –b. (c. %d. !
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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- Which of the following is not a correct statement? A table can be modified only if it doesn’t contain any rows of data. The maximum number of characters in a table name is 30. You can add more than one column at a time to a table. You can’t recover data contained in a table that has been truncated.arrow_forwardWhich of the following statements is correct? A table can contain a maximum of only one column marked as unused. You can delete a table by removing all columns in the table. Using the SET UNUSED clause allows you to free up storage space used by a column. None of the above statements are correct.arrow_forwardHow do you indicate that a column alias should be used?arrow_forward
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- . Which of the following is not a valid statement? (refer to the tables in the JustLee Books database) a. You can change the name of a table only if it doesn’t contain any data.b. You can change the length of a column that doesn’t contain any data.c. You can delete a column that doesn’t contain any data.d. You can add a column to a table.arrow_forwardWhich of the following statements is correct? (refer to the tables in the JustLee Books database) a. A table can contain a maximum of only one column marked as unused. b. You can delete a table by removing all columns in the table. c. Using the SET UNUSED clause allows you to free up storage space used by a column. d. None of the above statements are correct.arrow_forwardWhich of the following lists all books published by the publisher named Printing Is Us? (refer to the tables in the JustLee Books database.)a. SELECT titleFROM books NATURAL JOIN publisherWHERE name ¼ 'PRINTING IS US'; b. SELECT titleFROM books, publisherWHERE pubname ¼ 1;c. SELECT *FROM books b, publisher pJOIN tables ON b.pubid ¼ p.pubidWHERE name ¼ 'PRINTING IS US';d. none of the abovearrow_forward
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