%A Thi Huong Dao %A Van Khanh To %A Ninh Thuan Truong %A Quang Ton Chu %A Viet Ha Nguyen %T Integrating and Checking Access Permissions in Object Oriented Models %X Encapsulation in object oriented models refers to the bundling of data with the methods that operate on that data, it is used to hide the values or state of a structured data objects and preventing unauthorized parties' direct access to them. Access control mechanism in information systems is the process of mediating every request to resources and determining whether the request should be granted or denied. This paper proposes an approach allowing us to integrate access control mechanisms in object oriented paradigm. More detail, we define the access permissions between methods of classes in a UML model and providing a prototype to verify if the program implementation satisfied their access permission constraints. %K Unified Modeling Language;authorisation;data encapsulation;object-oriented methods;UML model;access control mechanisms;access permission constraints;encapsulation;object oriented models;structured data objects;Access control;Encapsulation;Medical services;Object oriented modeling;Software;Unified modeling language;Access control;UML class diagram;specification;verification %P 49-53 %D 2015 %C Ho Chi Minh city, Vietnam %L SisLab1465