ComponentOne DataObjects includes two editions to provide you with a choice of tools to best suits your needs: ComponentOne DataObjects Enterprise for .NET (referred to as C1DataObjects) and ComponentOne DataObjects Express for .NET (referred to as C1DataExpress). The main differences between the two editions are in their design-time interfaces and in the level of required user expertise.

C1DataExpress and C1DataObjects Enterprise Edition are not mutually-exclusive, they can even be used together in the same application. They have common runtime core functionality and object model. The difference is primarily in design time: developers use a special Schema Designer in C1DataObjects whereas C1DataExpress is a suite of three simple components with built-in design-time support.