Data processing: database and file management or data structures – File or database maintenance – Database recovery
Reexamination Certificate
2011-08-23
2011-08-23
LeRoux, Etienne P (Department: 2161)
Data processing: database and file management or data structures
File or database maintenance
Database recovery
Reexamination Certificate
active
08005798
ABSTRACT:
A method for data recovery of a data set migrated from a first storage media to a second storage media, where the data set includes a header record and multiple control records interleaved with corresponding data blocks. The header record is examined to identify a number of control records and data blocks comprising the data set. Next, the control records and data blocks are examined in order, starting with an initial data block, until a first data block is identified due to its failure to match the attribute included in the associated control record. Then the control records and data blocks are examined in reverse order, starting with a last data block, until a second data block is identified due to its failure to match an attribute included in the associated control record. Lastly, each data block from the first data block to the second data block are set to a lost data value.
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Lehr Douglas Lee
McCune Franklin Emmert
Reed David Charles
Smith Max Douglas
International Business Machines - Corporation
LeRoux Etienne P
Quarles & Brady LLP
Regelman Dale F.
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