The query interface will be enable a researcher to select data from the library, convert units on certain parameters (such as degrees Celsius to degrees Fahrenheit), and provide a delimited text file (.csv) that can be brought into most spreadsheet and statistical packages.
Once you know the datasource, you know what the primitives, stations, dates, and data associated, which as we know comprise an event. You can build an interface against these types, and then generate the query object based on what is selected. That query object is passed to the SODA engine which will return the selected values.
todo: link image
todo: create hyperlinks from this document to other objects
