A structured file includes information to bind a web data source to a web data query system. Code is embedded within the structured file and is in a code language understood by the web data query system. The code is unrestricted in function. Code language objects are exposed within the web data query system for use by the code to interface with the web data query system and the web data source. A URL is associated with the structured file to enable access of the structured file through the Internet. A unit-based quota method is implemented to manage execution of code in the structured file. The unit-based quota method collapses multiple dimensions of computing resource control into a single unit value, tracks a number of units expended by the code, and stops execution of the code when the number of units expended by the code reaches a set limit.