What are the Data Actions available when saving data into a Data Extension in DESelect Segment?

in deselect segment, it is possible to append, update, or overwrite the data we refer to this as data action, similar to how it is called when creating a sql query activity in automation studio to change this setting, click on the tools option on the top right corner of the output step, and choose set data action from the modal, you can select the data action you want to apply to your data and hit save overwrite overwrite the current data in the target data extension append add results as new data to the target data extension update update existing records and add new records to the target data extension