Complex sentence: A conceptual schema, or conceptual data model, is a map of concepts and their relationships, for example, a conceptual schema for a karate studio would include abstractions such as "student", "belt", "grading" and "tournament".
Split into simpler sentences: A conceptual schema, or conceptual data model, is a map of concepts and their relationships. For example, a conceptual schema for a karate studio would include abstractions such as "student", "belt", "grading" and "tournament".