Abstract: A method, apparatus, and computer instructions for synchronizing a database used by a client device with at least one server. A locally unique identifier is associated with each record in the database at the client. The locally unique identifier for a deleted record is changed to a selected value. This value is selected in a manner to indicate that a record has been deleted. This locally unique identifier may be a negative value and may be selected by multiplying the locally unique identifier by a negative one. The selected value is used in synchronizing the database and is used to track records deleted since a last synchronization of the database. In the depicted examples, this selected value is unique and allows for mapping back to the locally unique identifier for the record.

Abstract: A method, apparatus, and computer instructions for synchronizing a database utilized by a client device with a set of servers in which one server has the database. A change log is used with a client database for synchronizing the database. Dirty bits set in the client database are identified and a change log is modified based on the identified dirty bits. This change log is used to synchronize the database on the server with a client database on the client device.

Abstract: A method, apparatus, and computer instructions for synchronizing a database utilized by a client device with a set of servers in which one server has the database. A change log is used with a client database for synchronizing the database. Dirty bits set in the client database are identified and a change log is modified based on the identified dirty bits. This change log is used to synchronize the database on the server with a client database on the client device.

Abstract: A method, apparatus, and computer instructions for synchronizing a database used by a client device with at least one server. A locally unique identifier is associated with each record in the database at the client. The locally unique identifier for a deleted record is changed to a selected value. This value is selected in a manner to indicate that a record has been deleted. This locally unique identifier may be a negative value and may be selected by multiplying the locally unique identifier by a negative one. The selected value is used in synchronizing the database and is used to track records deleted since a last synchronization of the database. In the depicted examples, this selected value is unique and allows for mapping back to the locally unique identifier for the record.