vdm
VDM (Vienna Development Method) is a formal method for specifying, developing, and verifying software systems. It uses mathematical models—primarily set theory and typed functions—to create precise, unambiguous specifications. VDM includes languages such as VDM‑S (specification) and VDM‑PP (programming) and supports stepwise refinement, allowing developers to transform abstract specifications into executable code while proving correctness at each stage. It is widely used in safety‑critical domains like aerospace, rail, and telecommunications. Views Nigeria