1.5: ALTER COMMAND
1. Changing a data type and size of data type of a particular column in the table.
2. Adding the new columns to add existing table.
3. Changing a column name.
4. Dropping unwanted columns from an existing table.
1. Changing a data type and size of data type of a particular column in the table.
2. Adding the new columns to add existing table.
3. Changing a column name.
4. Dropping unwanted columns from an existing table.