Collaborating- this style is effective for long-term business relationship because they find a solution that suits both parties and trying to keep everybody happy. It needs to be win-win outcome.
Accommodating- give up my goals and agree with others. It is not effective style for long-term business relationship because if one of the parties is not happy with the outcome, why would they be interested investing into long-term relationship?! Your business is not gaining anything from that relationship.