Abstract: A method for memory management in an electronic device includes receiving partial content data records at the electronic device, storing the partial content data records in a memory of the electronic device, receiving a full content data record corresponding to one of the partial content data records, determining whether or not sufficient memory is available in the memory of the electronic device to store the full content data record and, if so, writing the full content data record over the corresponding partial content data record stored in the memory; and repeating the receiving and determining until either: full content data records corresponding to each of the partial content data records are received; or a low memory condition is determined in the memory. The partial content data records include key fields of data sufficient for uniquely identifying corresponding full content data records at a second electronic device.

Abstract: A method for synchronizing databases at a portable electronic device with corresponding databases at a second electronic device, the method including determining which one of the databases at the portable electronic device is to be synchronized based on a directed acyclic graph representing database dependencies, and synchronizing the one of the databases at the portable electronic device with a corresponding one of the databases at the second electronic device.