Building A Unified Query That Spans Heterogeneous Environments

摘要

A unified query building system generates a source structure comprising nodes from a data structure input of an identified data source, displays the generated source structure in a logical view, adds a selected node or element from the nodes to a design query canvas, generates a query object from the selected node based on a source type of the selected node, presents a logical view of a query function of a selected query object, and generates a unified query comprising the generated query objects. The logical view is displayed in a graphical user interface comprising a design query canvas comprising grids corresponding to functions in a query language such as SQL or XML. The generated unified query is displayed in an actual query view and is outlined in a query outline view.