Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3, Problem 8MC
Which of the following statements is correct?
- 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.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
. 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.
The HAVING clause applies to columns and expressions for individual rows, while the WHERE clause is applied to the output of a GROUP BY operation.
True or False ?
Which of the following is true? (refer to the tables in the JustLee Books database)a. If you truncate a table, you can’t add new data to the table.b. If you change the default value of an existing column, all existing rows containing a NULL value in the same column are set to the new DEFAULT value.c. If you delete a column from a table, you can’t add a column to the table with the same name as the previously deleted column.d. If you add a column to an existing table, it’s always added as the last column of the table.
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...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- List items have an index number. In the following list, which item has the index number of 3? ["John", "Harry", "Jesse", "John", "Harry", "Harry"] Select one: a. None O b. "John" O c. "Jesse" O d. "Harry"arrow_forwardThe Movie table has the following columns: ID - positive integer Title - variable-length string Genre - variable-length string RatingCode - variable-length string Year - integer Write ALTER statements to make the following modifications to the Movie table: Add a Producer column with VARCHAR data type (max 50 chars). Remove the Genre column. Change the Year column's name to ReleaseYear, and change the data type to SMALLINT.arrow_forwardWhich of the following is true?a. All data in a table can be recovered if the table is dropped with the PURGE option.b. All data in a table can be recovered from the recycle bin if the table is dropped.c. All data in a table is lost if the table is dropped.d. All of the above statements are true.arrow_forward
- What function in the pandas library can display the maximum rows or columns in a table? A) pd.set_table B) pd.read_csv C) pd.set_data D pd.set_optionarrow_forwardA9. Which of the following is true about removing rows from a table? A. No rows are deleted if you omit the WHERE clause. B. You cannot delete rows based on values from another table. C. You cannot delete rows from table D. You remove existing rows from a table using the DELETE statementarrow_forwardWhich function determines the number of rows in a table? a. ROW b. CALCULATE c. COUNT d. NUMBERarrow_forward
- Detailed answer please. I will Upvote correct and detailed answer. Thank youarrow_forwardWhich of the following statement is correct about dictionary clear() method.? a. delete only contents but structure will be exist b. None of these c. delete all contents and structure both d. delete only structurearrow_forwardAssignment Two: We will write three procedures on our tables, the first of which I have provided as an example. proclnsertPlayer takes one IN VARCHAR(16) paramater and returns an error code in the second SMALLINT (INOUT) parameter. The procedure checks the parameter and, if there are no errors, inserts the value into tblPlayers. Documentation of errors Condition Error code No errors 1st param Null or zero len playerID taken 1 proclnsertGame will receive two IN VARCHAR(16) interpreted asarrow_forward
- Q1. Write a SELECT statement that returns these columns from the Invoices table: The invoice _total column A column that uses the ROUND function to return the invoice_total column with 1 decimal digit A column that uses the ROUND function to return the invoice_total column with no decimal digits Q1. Write a SELECT statement that returns these columns from the Invoices table: • The invoice_total column • A column that uses the ROUND function to return the invoice_total column with 1 decimal digit • A column that uses the ROUND function to return the invoice_total column with no decimal digits invoice_total one digit 3813.33 3813.3 zero_digits 3813arrow_forwardFirst normal form says: a. No nonkey columns depend on another nonkey column b. Every column that's not part of the primary key is fully dependent on the primary key. c. Eliminate repeated fields. d. None of the abovearrow_forwardPYTHON CODE Using Artists.csv (link below), write a query that returns all lines that are female artists only, with begin date greater than 1950 but no greater than 2000 Write a query that will return all lines of British Male artists, who's first names starts with the letter ‘A’ and has an end date earlier than 1990 Write a query that will write to a file all lines that have Japanese Artists who’s difference of end date and begin date exceeds 100 years. I.e. if artist begins in 1900 and ends in 2005, then they would be included in the output (2005-1900 = 105 years) Write a query that will write and find to a file the artist who’s been at the Museum the longest (the widest gap between Begin Date and End Date) Artists.csv: https://media.githubusercontent.com/media/MuseumofModernArt/collection/master/Artists.csvarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
COMPREHENSIVE MICROSOFT OFFICE 365 EXCEComputer ScienceISBN:9780357392676Author:FREUND, StevenPublisher:CENGAGE L
A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr- Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:Cengage
COMPREHENSIVE MICROSOFT OFFICE 365 EXCE
Computer Science
ISBN:9780357392676
Author:FREUND, Steven
Publisher:CENGAGE L
A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr
Np Ms Office 365/Excel 2016 I Ntermed
Computer Science
ISBN:9781337508841
Author:Carey
Publisher:Cengage
dml in sql with examples; Author: Education 4u;https://www.youtube.com/watch?v=WvOseanUdk4;License: Standard YouTube License, CC-BY