Custom Date Column

Hi

Earlier today I created a Custom Column in my data model that produced dates on a series of expressions using the SWITCH function because the IF statement was just too long and complicated to decipher.

I do have a separate Date table in my data model - would it be best practice to create a relationship between the two? I'm guessing yes. I just want to be 100% sure thats all so to not experience a issues down the line.

Thanks,