1. A computer implemented method for providing instance level security in an object-oriented application comprising: receiving, by a computer device, executing at least part of a functional logic tier of an application, a request from a user for one or more objects present in the functional logic tier, the functional logic tier comprising objects, each object having a type; determining that a type of one of the one or more requested objects is associated with an object representative of instance level security; in response to determining that the type is associated with the object representative of instance level security, determining access is authorized to at least some of the one or more objects, determining access comprising: obtaining a data access statement configured to obtain data associated with the one or more objects from a data store; altering the data access statement to access an instance level security feature of the data store; accessing, by a computer device executing at least part of a data tier of the application, a link data structure in the data tier of the application that links the access authorized user with at least some of the one or more objects using the altered data access statement; and providing the at least some of the one or more objects to the access authorized user; wherein multiple objects representative of instance level security are associated with the link data structure; wherein the object representative of instance level security is associated with a name and wherein determining the user is authorized to access at least some of the one or more objects is based at least in part on the name.