1. A method of accessing content in a travel management system, the method comprising: receiving a request from an application to access a standard data element and a non-standard data element from an extended record data structure based at least in part upon access criteria; filtering a plurality of attributes of a first data container associated with the non-standard data element based at least in part upon a plurality of predefined filtering rules in order to generate filtered attributes; and generating an abstract container that includes the filtered attributes of the non-standard data element and is assigned a unique abstract type.