1. A method comprising: identifying at least two computing systems and a plurality of data objects from the identified computing systems containing predetermined data, wherein at least one of the computing systems is a legacy computing system; obtaining a hierarchical list of tables and fields of each table associated with each identified data object from an external data source; identifying a selection of at least one table or field from the hierarchical list; identifying, using a processing device, those legacy computing system archive files that include the selected at least one table or field associated with its respective data object, wherein each archive file archives data from a subset of tables and fields of tables in a respective legacy computing system that is associated with a particular data object; extracting, using the processing device, the selected at least one table or field from the identified legacy computing system archive files; merging the extracted tables or fields from the archive files with data obtained from any remaining of the at least two computing systems; and outputting a consolidated result from the merged data.