SQL quiz. Which of the following <b>DROP</b> statements is i

Which of the following DROP statements is incorrect?

We can not drop rows , we can only delete rows.
DROP ROW statement simply does not exist in SQL.
DROP INDEX statement is used to delete an index in a table.
DROP TABLE statement is used to drop an existing table in a database.
DROP DATABASE statement is used to drop an existing database in SQL schema.

Theory

SQL DROP INDEX, DROP TABLE, and DROP DATABASE
Indexes, tables, and databases can easily be deleted/removed with the DROP statement.
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The DROP INDEX Statement
The DROP INDEX statement is used to delete an index in a table.
DROP INDEX Syntax for MS Access:
```
DROP INDEX index_name ON table_name
```
DROP INDEX Syntax for MS SQL Server:
```
DROP INDEX table_name.index_name
```
DROP INDEX Syntax for DB2/Oracle:
```
DROP INDEX index_name
```
DROP INDEX Syntax for MySQL:
```
ALTER TABLE table_name DROP INDEX index_name
```
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The DROP TABLE Statement
The DROP TABLE statement is used to delete a table.
```
DROP TABLE table_name
```
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The DROP DATABASE Statement
The DROP DATABASE statement is used to delete a database.
```
DROP DATABASE database_name
```
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The TRUNCATE TABLE Statement
What if we only want to delete the data inside the table, and not the table itself?
Then, use the TRUNCATE TABLE statement:
```
TRUNCATE TABLE table_name
```
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