When the correct SQL command is used to delete a tables structure what happens to the data in the table?
The SQL DROP command is used to remove an object from the database. If you drop a table, all the rows in the table is deleted and the table structure is removed from the database.
Which command in SQL is used to delete a tables and their data and structure?
SQL | DROP, TRUNCATE. DROP is used to delete a whole database or just a table. The DROP statement destroys the objects like an existing database, table, index, or view.
Which SQL keyword is used to change the structure properties of constraints of a table?
11) The SQL keyword MODIFY is used to change the structure, properties or constraints of a table.
Which command is used to delete a database?
Drop database database_name command is used to delete a database.
Which of the following is the correct SQL statement to delete a database table?
The DROP TABLE statement is used to delete a table.
What is the basic syntax for delete query?
DELETE FROM table_name WHERE condition; Note: Be careful when deleting records in a table! Notice the WHERE clause in the DELETE statement. The WHERE clause specifies which record(s) should be deleted.
Is DELETE DDL or DML?
DROP and TRUNCATE are DDL commands, whereas DELETE is a DML command. DELETE operations can be rolled back (undone), while DROP and TRUNCATE operations cannot be rolled back.
How many tables can be join in SQL query?
Theoretically, there is no upper limit on the number of tables that can be joined using a SELECT statement. (One join condition always combines two tables!) However, the Database Engine has an implementation restriction: the maximum number of tables that can be joined in a SELECT statement is 64.
Should you use SQL triggers?
Because a trigger resides in the database and anyone who has the required privilege can use it, a trigger lets you write a set of SQL statements that multiple applications can use. It lets you avoid redundant code when multiple programs need to perform the same database operation.
Which SQL keyword is used to DELETE a table’s structure group of answer choices?
The SQL keyword DELETE is used to delete a table’s structure. When the correct SQL command is used to delete a table’s structure, the command can only be used with a table that has already had its data removed. One or more rows can be added to a table by using the SQL INSERT statement.