Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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- Which of the following symbols is used in a SELECT clause to display all columns from a table? / & * "arrow_forwardWhich of the following statements deletes all rows in the HOMEWORK10 table? a. DELETE FROM homework10; b. DELETE . FROM homework10; c. DELETE FROM homework10; d. DELETE FROM homework10 WHERE amid = ; e. Both c and d delete all rows in the HOMEWORK10 table.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_forward
- 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 characters can be used in a table name? a. b. ( c. % d. !arrow_forwardWhich clause is required in a SELECT statement? WHERE ORDER BY GROUP BY FROM all of the abovearrow_forward
- Which object in the data dictionary enables you to verify DEFAULT column settings? DEFAULT_COLUMNS DEF_TAB_COLUMNS USER_TAB_COLUMNS None of the abovearrow_forwardWhich of the following is true? All data in a table can be recovered if the table is dropped with the PURGE option. All data in a table can be recovered from the recycle bin if the table is dropped. All data in a table is lost if the table is dropped. All of the above statements are true.arrow_forwardWhich of the following is a correct statement? You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. You can’t create empty tables—all tables must contain at least three rows of data. A table can contain a maximum of 1000 columns. The maximum length of a table name is 265 characters.arrow_forward
- Which command can you use to change the existing data in a table?arrow_forwardCreate a table named BOOK_STORES to include the columns listed in the following chart.arrow_forwardWhich of the following lines of the SELECT statement contains an error? 1 SELECT * 2 FROM publishers; line 1 line 2 There are no errors.arrow_forward
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