A method and a system for facilitating data retrieval from a plurality of data sources are provided. A plurality of ‘Local Data Objects’ (LDOs) corresponding to the plurality of data sources are generated. Further, the plurality of LDOs are mapped onto a ‘Global Data Object’ (GDO). The GDO consolidates the plurality of LDOs into a single integrated model. The mapping of the LDOs onto the GDO includes a plurality of ‘binding conditions’ that relate LDO attributes to GDO attributes. The mapping also includes a plurality of ‘transformation functions’ for transforming the LDO attributes to the GDO attributes.