Tab and Slot Feature

When a design calls out for a tab to be inserted into a slot and then welded over, what type of joint would this be considered?

Including saving the project during design, bringing it back up to edit, and then assembling it together to make sure the tab and slots fit?

tab and slot welding table design optimization, and the analytical modeling for bending design and evaluation was presented

tab and slot solidworks Including saving the project during design, bringing it back up to edit, and then assembling it together to make sure the tab and slots fit?