Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2008-07-01
2008-07-01
Cottingham, John (Department: 2167)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000
Reexamination Certificate
active
07395283
ABSTRACT:
A method for copying data from a source logical device to a destination logical device. In response to a copy command from a requesting host application identifying the source and destination logical devices, an environment is established. Thereafter a calling system receives an immediate response that the copy operation is complete even though no data has been copied. Application programs may access storage locations in either the source or the destination logical device during the copy phase. A copy program transfers the date on a track-by-track basis to the destination logical device. Procedures assure that any data access to a particular track in either the source or destination logical device by any application prior to the transfer of that track is accommodated to maintain data integrity.
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Atzmony Yedidia
Kopylovitz Haim
Levinson David I.
Moreshet Hana
O'Hare DeAnn L.
Cottingham John
EMC Corporation
Herbster George A.
Lovel Kimberly
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