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Linking of parent-child data records in a legacy software modernization system

  • US 9,223,819 B2
  • Filed: 01/13/2014
  • Issued: 12/29/2015
  • Est. Priority Date: 08/28/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • at a conversion engine executed on a computing device;

    sequentially receiving a plurality of legacy data records from a legacy source data file stored in an arbitrary source without running a query on the arbitrary source, the plurality of legacy data records including parent records and child records;

    concurrently migrating the parent records and corresponding child records while loading additional legacy data records, wherein the parent records and corresponding child records are migrated, independently and in parallel, through a data migration workbench transformer of the conversion engine, such that during the loading of the plurality of data records;

    assigning a surrogate key to at least one parent record of the parent records;

    assigning a corresponding foreign key to the corresponding child record linked to the at least one parent record;

    generating a destination store of records that contains the plurality of data records;

    locating at least one record in the destination store of records that has a dangling key; and

    correcting dangling keys to generate a destination store of records with referential integrity, wherein correcting dangling keys includes at least one of deleting the record with the dangling key or changing the dangling key in the record to create a valid foreign key.

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