Synchronization of database changes among multiple devices
First Claim
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1. A computer-implemented method of synchronizing databases, the method comprising the steps of:
- first, determining, by a primary device, one or more primary differences between a primary database and a local synchronization database associated with the primary device;
second, receiving, at the primary device from a secondary device, one or more secondary differences associated with a secondary database;
third, merging, at the primary device, the primary differences and the secondary differences to generate a set of merged differences;
fourth, providing, by the primary device, the set of merged differences to the secondary device;
fifth, receiving, at the primary device, an acknowledgment from the secondary device indicating receipt of the set of merged differences by the secondary device, where the acknowledgment is distinct from the secondary differences; and
sixth, updating the primary database in accordance with the set of merged differences after receipt of the acknowledgment.
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Abstract
Methods, systems, and apparatus, including computer program products, for synchronizing database changes among multiple devices. In one aspect, a method includes determining one or more primary differences between a primary database and a local synchronization database; receiving, from a secondary device, one or more secondary differences associated with a secondary database; merging the primary differences and the secondary differences to generate a set of merged differences; providing the set of merged differences to the secondary device; receiving, from the secondary device, an acknowledgment indicating receipt of the set of merged differences; and updating the primary database in accordance with the set of merged differences after receipt of the acknowledgment. Further, at least one conflict can be detected between the primary differences and the secondary differences, and can be resolved prior to generating the set of merged differences.
18 Citations
24 Claims
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1. A computer-implemented method of synchronizing databases, the method comprising the steps of:
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first, determining, by a primary device, one or more primary differences between a primary database and a local synchronization database associated with the primary device; second, receiving, at the primary device from a secondary device, one or more secondary differences associated with a secondary database; third, merging, at the primary device, the primary differences and the secondary differences to generate a set of merged differences; fourth, providing, by the primary device, the set of merged differences to the secondary device; fifth, receiving, at the primary device, an acknowledgment from the secondary device indicating receipt of the set of merged differences by the secondary device, where the acknowledgment is distinct from the secondary differences; and sixth, updating the primary database in accordance with the set of merged differences after receipt of the acknowledgment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer program product, encoded on a non-transitory computer-readable medium, operable to cause data processing apparatus to perform operations comprising the steps of:
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first, determining, by a primary device, one or more primary differences between a primary database and a local synchronization database associated with the primary device; second, receiving, at the primary device from a secondary device, one or more secondary differences associated with a secondary database; third, merging, at the primary device, the primary differences and the secondary differences to generate a set of merged differences; fourth, providing, by the primary device, the set of merged differences to the secondary device; fifth, receiving, at the primary device, an acknowledgment from the secondary device indicating receipt of the set of merged differences by the secondary device, where the acknowledgment is distinct from the secondary differences; and sixth, updating the primary database in accordance with the set of merged differences after receipt of the acknowledgment. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a secondary device including a secondary database stored on a storage device; and a primary device communicatively coupled to the secondary device and including a primary database and a local synchronization database stored on a storage device, wherein the primary device further includes processor electronics configured to perform operations comprising the steps of; first, determining one or more primary differences between the primary database and the local synchronization database associated with the primary device; second, receiving, from the secondary device, one or more secondary differences associated with the secondary database; third, merging the primary differences and the secondary differences to generate a set of merged differences; fourth, transmitting the set of merged differences to the secondary device; fifth, receiving, from the secondary device, an acknowledgment indicating receipt of the set of merged differences by the secondary device, where the acknowledgement is distinct from the secondary differences; and sixth, updating the primary database in accordance with the set of merged differences after receipt of the acknowledgment. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification
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Current AssigneeApple Inc.
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Original AssigneeApple Inc.
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InventorsWallace, Alexander David, Flisakowski, Shawn Patrick, Milito, Craig Matthew, Rauenbuehler, Keith Walter
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Primary Examiner(s)Ng, Amy
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Assistant Examiner(s)Khong, Alexander
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Application NumberUS12/363,596Time in Patent Office1,306 DaysField of Search707/620, 707/621US Class Current707/620CPC Class CodesG06F 16/273 Asynchronous replication or...
