The Conceptual Data Model is a high-level graphical representation of the relationships between Business Objects within the enterprise.

Conceptual data models:

• Includes high-level data constructs.
• Use Non-technical names, so that executives and managers at all levels can understand the data basis of Architectural Description.
• Use general high-level data constructs from which Architectural Descriptions are created in non-technical terms.

Source: wikipedia.org

Example:

See also: Logical Data Model, Physical Data Model