Answer: In most situation, it is possible to reduce the number of relationships in an initial ERD since there ma be several design error in the initial ERD. The most common error is redundant relation due to cycles in an ERD. The resolution is that you should examine each relationship cycle to see if a relationship can be derived from other relationships and also you should know what will happen when removing redundant relationships since, sometimes, when you remove an important relationship in a cycle, this action will possibly lead to more serious error in the future. In some other situations, you may overuse M-way associative entity types since M-way relationships are not common, and you may reduce the number of relationships in an initial ERD by transforming a M-way relationship to multiple binary relationships. For example, in Employee, Skills, Project M-way relationship, there are three relationships. Nevertheless, you only have two relationships when you transform it to the binary relationship.