Data migration in a networked computer environment

A computer program product for migrating data structures stored on a source database to a destination database, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions being executable by one or more processors to cause the one or more processors to:

• generate a plurality of representations for a data structure stored on the source database based on access patterns for the data structure on the source database, wherein each representation corresponds to a different structural format than a structural format of the data structure on the source database;
• generate a plurality of dictionaries, wherein each of the plurality of dictionaries corresponds to a representation for the data structure from the plurality of representations, and wherein each of the plurality of dictionaries is used to convert the data structure to the different structural format of the representation for the data structure corresponding to each of the plurality of dictionaries;
• in response to a request from a destination database system for a dictionary of a corresponding structural format for a target data structure of the destination database, transfer the data structure and the requested dictionary of the corresponding structural format from the source database to the destination database system;
• and
• load the transferred data structure onto the destination database in the corresponding structural format for the target data structure in accordance with the transferred dictionary.