The correct translation of any one having something in the past in positive, negative, and both interrogatives is as follows.
I had a good job.
I did not have a business. (I didn't have a business)
Did you not have a business? (Didn't you have a business?)
Did you have a good job?
I have named these tenses Past simple in my 'Marvelous English Speaking Course (part 1) book
REMEMBER: these are completely different from PAST PERFECT TENSES, where 'had not' is used instead of 'did not have or didn't have'.
For more info you can visit our website www.EnglishIsVeryEasy.com and take our very economical Basic ESL course to refine your tenses so that you can polish your tenses forever. You might become able to teach tenses to others too.
This chart is my copyright to help people start learning