A process and a system collect data from a data-source into a manufacturing operation management (MOM) data warehouse. The data in the MOM data-warehouse are exposed according to a basic data model in which a performance parameter is linked to a basic set of context identifiers for MOM analysis purposes. The data in the data source are exposed according to a source data model in which a source performance parameter is linked to a source set of context identifiers. A data extensor module is provided for processing the data received from the data source to add, upon need, a context identifier linked to the source performance parameter. Whereby the added context identifier is present in the basic set but it is not present in the source set. The data extensor module processing data is received from the data source to obtain augmented data stored in the MOM data warehouse.