An apparatus comprises data storage coupled to one or more processors and a plurality of data elements contained in a database structure and organized in a hierarchical data tree, and instructions that perform receiving a network location identifier from a client computer, wherein the network location identifier comprises at least a portion that specifies a first view of the data tree; creating, using the portion of the network location identifier, a relational database query and submitting the query to a relational database; receiving from the relational database a set of data elements that is associated with the first view; generating a first electronic document comprising the set of data elements, including generating transformative links to other network location identifiers corresponding to performing actions on nodes in the data tree; and providing the first electronic document to the client computer.