The present invention provides a method of transferring content from a file and a database. In this case, the file includes content instances, each content instance being associated with a respective field, and each field having a respective type. The transfer is achieved by determining the type of each field, and then storing each content instance in a store in accordance with the determined field type of the associated field. Each content instance can then be transferred to the database in accordance with the determined field type. A similar procedure is provided for creating XML files based on content within the database.