Question

The SQL statement used to update data in a database is UPDATE. Here's a brief explanation of each option:

Option A: SAVE
There is no standard SQL command called SAVE for updating data in a database.

Option B: UPDATE
The UPDATE command is used to modify existing records in a database table. It allows you to change the values of specific columns in one or more rows based on specified conditions.

Option C: SAVE AS
SAVE AS is not a standard SQL command used for updating data. It's not typically used in SQL for data modification.

Option D: MODIFY
MODIFY is not a standard SQL command for updating data. It may be used in some specific database systems, but it's not a commonly recognized SQL command for data updates.

So, the correct SQL statement to update data in a database is Option B: UPDATE.

Answer 1

The correct SQL command to update database records is the UPDATE statement. It is used to modify the values of specified columns within one or more rows of a database table, based on conditions defined in a WHERE clause.

Step-by-step explanation:

The UPDATE command in SQL is the correct choice for modifying existing records in a database table. This command allows you to change data in any number of rows, as long as they meet the conditions specified in the WHERE clause. To use the UPDATE statement, you generally specify the table name, followed by the SET keyword, which indicates the column whose value you want to change, and the new value you wish to assign to it. For example, to change the last name of a user in a table named Users, you might write something like:

UPDATE Users SET lastName = 'Smith' WHERE userID = 1;

This would update the lastName field to 'Smith' for the user where userID is 1. Remember, without specifying a WHERE clause, the UPDATE command will modify all records in the table, which usually isn't the intended action, so be cautious to include a condition unless you actually intend to update the entire table.