IJOR is a forum to help professionals, academics, researchers and practitioners, working in the field of operations research theory and applications in the emerging economy and society, to discuss of important ideas, concepts and disseminate information and to learn from each other's work. IJOR aims to act as a forum for exchanging innovative ideas and sharing practical experiences in teaching and learning of operations research theory, models and applications. The global dimension is emphasised in developing operational research theory and applications to meet the accelerating technological changes and changes in global economy. IJOR aims to help professionals working in the field of operations research, academic educators, industry consultants, and practitioners to contribute, to disseminate and to learn from each other’s work. The paper cites a significant fraction of the literature on CP/OR integration and concludes with future perspectives.The main objective of IJOR is to promote research and application of operations research theory and application in new economy and society. The fourth uses relaxed decision diagrams developed for CP propagation to help solve dynamic programming models in OR. The third decomposes the problem into a portion solved by CP and a portion solved by OR, using CP-based column generation or logic-based Benders decomposition. The second applies OR techniques to domain filtering in CP. The first strategy tightly interweaves propagation from CP and relaxation from OR in a single solver. We interpret CP and OR as relying on a common primal-dual solution approach that provides the basis for integration using four main strategies. Here we present an overview of the integration of constraint programming (CP) and operations research (OR) to solve combinatorial optimization problems. The mathematical points of interest and the explicit techniques used to manufacture and investigate these models can be very modern and are tended to. An approach to operations research techniques and constraint programmingĪkash Pandey, Subhash Kumar Sharma, Umesh Kumar GuptaĬonstraint Programming, Operations Research, Operation Research Techniques.