The next two levels of model abstraction, the logical data model and the physical data model (often referred to interchangeably) provide the details required by software developers to implement the objectives for the conceptual model.

• 在抽象概念中的另外两层，逻辑层和实体层(常被提到是可以互换的)则提供了软体开发者去实现概念层的目标中所需要的细节。