9. A system comprising: a processor to: define a meta-data class having meta-data used to describe a class and constituent components of the class, the meta-data class having a property; create a compiled version of the class, the compiled version of the class being embedded with the meta-data class; create an instance of the class; receive, from an entity, a request to access the instance of the class; access, based on receiving the request, the property of the meta-data class embedded in the compiled version of the class to determine how to access data associated with the instance of the class; receive, based on accessing the property of the meta-data class, information regarding how to access the data associated with the instance of the class, the meta-data providing the information, the meta-data providing a value to the entity, and the value being used to identify the instance of the class; and access, based on the information regarding how to access the data associated with the instance of the class, the data associated with the instance of the class.
9. A system comprising: a processor to: define a meta-data class having meta-data used to describe a class and constituent components of the class, the meta-data class having a property; create a compiled version of the class, the compiled version of the class being embedded with the meta-data class; create an instance of the class; receive, from an entity, a request to access the instance of the class; access, based on receiving the request, the property of the meta-data class embedded in the compiled version of the class to determine how to access data associated with the instance of the class; receive, based on accessing the property of the meta-data class, information regarding how to access the data associated with the instance of the class, the meta-data providing the information, the meta-data providing a value to the entity, and the value being used to identify the instance of the class; and access, based on the information regarding how to access the data associated with the instance of the class, the data associated with the instance of the class. 21. The system of claim 9 , where the class is defined by a class definition that includes a specification of constituent methods, each specified constituent method, of the constituent methods, corresponds to an instance of a meta-method class, the specification of the constituent methods includes a specification of an attribute and a value of the attribute, the attribute is represented by a property of the meta-method class, and the specification of the constituent methods includes a specification of a particular meta-method class.