1. A system comprising: a database; two or more data access objects, wherein one or more data access objects comprise: exclusive access privileges to a subset of data within the database, and one or more of a read methods that provides access to data and a write method that causes data to be stored; and a proxy object, wherein the proxy object: accesses data via data access object methods, and includes a valuate method, the execution of which causes data to be passed from a data access object to the proxy object.