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US 8,019,722 B2Granted
Method and apparatus for synchronizing of databases
AssigneeResearch In Motion Limited
InventorsBarry Linkert, Jie Zhu, Salim H. Omar, Kathy A. Pereira, Galang Vuong
Life of this patent
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Abstract
A method for synchronizing a first database including first data records with a second database including second data records. The method includes starting a synchronization session with an electronic device on which the second database resides, requesting the first data records from the first database, temporarily disconnecting the synchronization session while awaiting receipt of the first data records, receiving the first data records, and restarting and completing the synchronization session.
Claims7
A method for synchronizing a first database including first data records with a second database including second data records, the method comprising:
- starting a synchronization session with an electronic device on which said second database resides;
- requesting said first data records from said first database;
- setting a timer upon requesting said first data records;
- if said timer expires prior to receiving said first data records,
- temporarily disconnecting said synchronization session while awaiting receipt of said first data records for allowing transfer of data not belonging to said second database, to and from said electronic device;
- receiving said first data records;
- generating a request to restart the synchronization session after receiving said first data records;
- sending said request to restart the synchronization session to said electronic device;
- and
- completing said synchronization session with said electronic device after receiving said first data records;
- otherwise, if said first data records are received prior to expiry of said timer:
- receiving said first data records;
- and
- completing said synchronization session with said electronic device;
- receiving information representative of said second data records prior to requesting said first data records;
- comparing information representative of said second data records with information representative of said first data records after receiving said first data records, wherein completing said synchronization session comprises sending a request for additional information associated with said second data records;
- generating a group hash of said first data records after receiving said first data records and prior to comparing,
- wherein said sending a request for additional information associated with said second data records comprises sending a request for a record hash for each of said second data records, and
- wherein completing said synchronization session comprises:
- generating a record hash for each of said first data records;
- comparing each record hash from said first data records with a corresponding record hash from said second data records;
- and updating at least one of said first data records and said second data records.
19 more elements
A non-transitory computer-readable medium having computer readable code embodied therein for:
- starting a synchronization session with an electronic device on which a second database resides, wherein said second database includes second data records;
- requesting first data records from a first database;
- setting a timer upon requesting said first data records;
- if said timer expires prior to receiving said first data records,
- temporarily disconnecting said synchronization session while awaiting receipt of said first data records for allowing transfer of data not belonging to said second database, to and from said electronic device;
- receiving said first data records;
- generating a request to restart the synchronization session after receiving said first data records;
- sending said request to restart the synchronization session to said electronic device;
- and
- completing said synchronization session with said electronic device after receiving said first data records;
- otherwise, if said first data records are received prior to expiry of said timer:
- receiving said first data records;
- and
- completing said synchronization session with said electronic device;
- receiving information representative of said second data records prior to requesting said first data records;
- comparing information representative of said second data records with information representative of said first data records after receiving said first data records, wherein completing said synchronization session comprises sending a request for additional information associated with said second data records;
- generating a group hash of said first data records after receiving said first data records and prior to comparing,
- wherein said sending a request for additional information associated with said second data records comprises sending a request for a record hash for each of said second data records, and
- wherein completing said synchronization session comprises:
- generating a record hash for each of said first data records;
- comparing each record hash from said first data records with a corresponding record hash from said second data records;
- and updating at least one of said first data records and said second data records.
19 more elements
Dependencies are inferred from the claim text.