So sánh phương pháp

	Lý thuyết về Ràng buộc (TOC)	Six Sigma DMAIC
Lĩnh vực	Quản lý chất lượng	Quản lý chất lượng
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1990	2014
Người khởi xướng	Eliyahu Goldratt	Motorola; Pyzdek & Keller
Loại	Continuous improvement framework	Structured process improvement methodology
Công trình gốc	Goldratt, E. M. (1990). Theory of Constraints. North River Press. ISBN: 978-0-88427-166-6	Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9
Tên gọi khác	TOC, Constraint Management, Bottleneck Theory, Kısıtlar Teorisi	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC
Liên quan	3	3
Tóm tắt	The Theory of Constraints (TOC) is a management philosophy and continuous improvement framework introduced by Eliyahu Goldratt in his 1984 novel The Goal and formalized in his 1990 book. TOC holds that every system has at least one constraint — a bottleneck that limits the system's overall throughput — and that systematically identifying and addressing that constraint is the most effective lever for improving performance. It is widely applied in manufacturing, project management, supply chains, and service operations.	Six Sigma DMAIC is a data-driven, five-phase process improvement methodology — Define, Measure, Analyze, Improve, and Control — used to reduce defects and process variation to fewer than 3.4 defects per million opportunities. Originating at Motorola in the 1980s and systematized by practitioners including Pyzdek and Keller, it is widely adopted in manufacturing, healthcare, finance, and service industries seeking sustained quality gains.