পদ্ধতির তুলনা করুন

	Constraints Theory (TOC)	Six Sigma DMAIC
ক্ষেত্র	মান ব্যবস্থাপনা	মান ব্যবস্থাপনা
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1990	2014
প্রবর্তক	Eliyahu Goldratt	Motorola; Pyzdek & Keller
ধরন	Continuous improvement framework	Structured process improvement methodology
মৌলিক উৎস	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
অপর নাম	TOC, Constraint Management, Bottleneck Theory, Kısıtlar Teorisi	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC
সম্পর্কিত	3	3
সারসংক্ষেপ	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.