• Shikha Singh
• Dr.Manuj Darbari

Designing is one of the most important part in building of a real time system. A proper and efficient design ensures the seamless behaviors of the system in future. There are different approaches for designs. Object-oriented is one of the popular approaches used. One of the popular choice of language by designers for developing real time systems is UML, for enhancing UML notation in modeling of real time application several approaches have been developed. OCL acts as a cherry on the top of UML to ensure system behaves correctly. The Unified Modeling Language (UML) is a universally useful visual demonstrating dialect in which we can determine, imagine, and report the segments of programming frameworks. It catches choices and comprehension about frameworks that must be developed. UML has turned into a standard displaying dialect in the field of programming designing. The Object Constraint Language (OCL) is a declarative language that portrays constraints or requirements on object-oriented models. A constraint is a limitation or restriction on at least one or more values of an object-oriented model. OCL is an industrial standard for object-oriented analysis and design (OOSD). The Object Constraint Language (OCL) began as a supplement of the UML documentation with the objective to beat the restrictions of UML (and in general, any graphical notation) in terms of precisely specifying detailed aspects of a system framework structure design. From that point forward, OCL has turned into a key part of any model-driven building (MDE) strategy as the default language for communicating a wide range of (Meta) model query, manipulation and specification requirements. Among numerous different applications, OCL is much of the time used to express model changes (as a major aspect of the source and target examples of transformation rules), well-formedness rules (as part of the definition of new domain-specific languages), or code-generation templates (as an approach to express the generation pattern examples and rules).This paper expects to give an exhaustive perspective of Object Constraint Language(OCL), its numerous applications and available tool support as well as the latest research developments and open challenges around it, especially in the territory of ecommerce

E-commerce, Security Features, OCL

"Contribution of Restricting Rules on Real Time Applications using UML/OCL: A Survey", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.638-642, May-2019, Available :http://www.jetir.org/papers/JETIR1905391.pdf

"Contribution of Restricting Rules on Real Time Applications using UML/OCL: A Survey", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp638-642, May-2019, Available at : http://www.jetir.org/papers/JETIR1905391.pdf