21. The system of claim 15 , wherein the operations further comprise: in response to determining that the metadata schemas of the target content groups into which content is to be loaded do not exist, creating the metadata schemas of the target content groups using the metadata schemas of the source content groups in the set of the source content repositories.
15. A system for transforming unstructured information into content in a uniform context, comprising: hardware logic implemented in a computer to perform operations, the operations comprising: with a federation service of the computer that presents a single view of source content repositories to a user: receiving a query specifying source content groups stored in a set of the source content repositories; running the query to retrieve metadata schemas of the source content groups, wherein each source content group has a metadata schema that describes a structure of metadata associated with the unstructured information in the source content group; extracting the unstructured information and metadata associated with the unstructured information from the set of the source content repositories; in response to user input, receiving selection of target content groups in another set of target content repositories; in response to receiving the selection of the target content groups, identifying metadata schemas of the target content groups, wherein each metadata schema describes a structure of metadata associated with the unstructured information in the target content group; creating a schema definition file including the retrieved metadata schemas of the source content groups and the identified metadata schemas of the target content groups; forwarding the unstructured information, metadata, and schema definition file to a transformation service of the computer; receiving, from the transformation service, transformed unstructured information and transformed metadata; and loading the transformed, unstructured information and the metadata into the set of the target content repositories.