How to update a column using oracle trigger?

@mallory_cormier 

To update a column using an Oracle trigger, you can create a trigger that fires before or after an insert, update, or delete operation on the table. Here is an example of how to update a column using an Oracle trigger:

1. Create a trigger that fires before an update operation on the table:

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CREATE OR REPLACE TRIGGER update_column_trigger
BEFORE UPDATE ON your_table
FOR EACH ROW
BEGIN
    :NEW.column_name := 'new_value';
END;

In this trigger, "update_column_trigger" is the name of the trigger, "your_table" is the name of the table you want to update, "column_name" is the name of the column you want to update, and 'new_value' is the new value you want to set for the column.

1. Once the trigger is created, any update operation on the table will invoke the trigger, and the specified column will be updated with the new value.
2. You can modify the trigger logic to suit your specific requirements, such as setting the new value based on certain conditions or calculations.

Remember to replace "your_table", "column_name", and 'new_value' with the actual table name, column name, and new value you want to update. Additionally, be cautious when creating triggers, as they can have a significant impact on database performance and data integrity. Test the trigger thoroughly before deploying it in a production environment.