na-adjective
simplistic; schematic; diagrammatic
Describes an explanation, view, or representation that reduces complexity to a simple diagram-like form, often implying oversimplification.
彼の説明は図式的すぎて、現実の複雑さを無視している。
His explanation is too simplistic and ignores the complexity of reality.
この図式的な分類では、例
This schematic classification has too many exceptions.
模式図 is a noun meaning 'schematic diagram', whereas 図式的 is an adjectival noun describing a way of thinking or representing.
Compound of 図式 (ずしき, 'diagram' or 'schema') and the adjectival suffix 的 (てき, '-like').