A process includes mapping a data format in an object in a source schema to a data format in an object in a destination schema. The process includes defining an attribute mapping, defining a relation between the data format in the object in the source and the data format in the object in the destination, mapping the data format in the object in the source to the data format in the object in the destination, and converting the data format in the object in the source to another data format within the source. When the object in the source has no analog in destination, a foreign object is introduced into the destination, and when the object in the destination refers to one or more dependent objects, one or more instances of referred objects are generated according to a predefined policy in the mapping.