How to delete a row with data with its parent row in another table

Question

There are two tables [UserData] and [HotelData] I\'ve linked them with a foreign key. which is \"Username\" and I want to delete which

Answer 1

The DELETE statement conflicted with the REFERENCE constraint "FKHotelData"

You have a constraint and this is helping with performance, do yourself a favor and add a column IsDeleted with a default value of 0 or to allow null's so it doesn't affect anything.

Then change your SELECT queries to have a WHERE clause that includes the condition

WHERE IsDeleted = 0

The point here is that its a Hotel business and they will want metrics/reporting on bookings. For medical and confidentiality purposes I'd lean toward the cascading delete answers. For this scenario it would be better to logically delete the data instead of physically delete it.