The values of existing data can be modified using the SQL command, which can be used to change several column values at once.

The values of existing data can be modified using the SQL ___Update command, which can be used to change several column values at once.

Explanation:

However, if you are interested in modifying some columns, then you must specify the columns of interest by using Update (table name) Set column1, column2, etc., which assigns a new value for the columns that you want to update, with each column value separated by a comma.  The SQL (Structured Query Language) Update command is used to update data of an existing database table.