A data function in received. The data function is indicative of a request for data from a database, and is included in a library of built-in functions of a computational software application. In response to receiving the data function, a request for database data is transmitted to a database system via a network. In response to the request for data, the database data is received from the database system via the network. In response to receiving the database data via the network, an expression is created using at least a portion of the received database data. The expression is capable of being operated on by the computational software application.