1. A system comprising: at least one processor; and a memory device operatively connected to the at least one processor; wherein, responsive to execution of program instructions accessible to the at least one processor, the at least one processor is configured to: assemble at least one statistical summary of at least one hierarchical language data source; access at least one entity of interest selected from the at least one statistical summary; generate at least one target hierarchical language model based on the at least one entity of interest; and transform data from the at least one hierarchical language data source into at least one relational form by executing transformation artifacts generated based on a type of the at least one relational form; wherein the hierarchical language comprises Extensible Markup Language (XML); wherein the type of the at least one relational form comprises a set of relational table; wherein the transformation artifacts comprise at least one structured query language (SQL) Data Definition Language (DDL) statement, an Extensible Stylesheet Language Transformations (XSLT) script, and an annotated XML schema; and wherein executing the transformation artifacts comprises: executing the SQL DDL statement to generate at least one relational table for the XML data source; and registering the annotated XML schema with a relational database configured to store transformed data from the XML data source.