Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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How many rows can be added to a table by executing the INSERT INTO … VALUEScommand?a. 1b. 2c. 3d. unlimited
Which SQL statement key word can be used to delete a record within a table?a. DELETEb. DROPc. REMOVEd. CLEAR
Which 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.
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- Which 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 command should you use to copy data from one table and have it added to an existing table?arrow_forwardWhich command can you use to change the existing data in a table?arrow_forward
- Which 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_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 command is used to create a table based on data already contained in an existing table?arrow_forward
- Which of the following keywords allows the user to delete a record from a table, even if rows in another table reference the record through a FOREIGN KEY constraint? a. CASCADE b. CASCADE ON DELETE c. DELETE ON CASCADE d. DROP e. ON DELETE CASCADEarrow_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_forwardWhat is the maximum number of rows that can be deleted from a table at one time?a. 1b. 2c. 3d. unlimitedarrow_forward
- Which of the following is a correct statement? ( refer to the tables in the JustLee Books database) a. You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. b. You can’t create empty tables—all tables must contain at least three rows of data. c. A table can contain a maximum of 1000 columns. d. The maximum length of a table name is 265 characters.arrow_forwardwhich DML keyword is used to make change to existing records in a table? a) Insert b) Select c) Update d) Deletearrow_forwardWhich of the following commands can be used to add rows to a table?a. INSERT INTOb. ALTER TABLE … ADDc. UPDATEd. SELECT … FOR UPDATEarrow_forward
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