1. A flash memory device having stored thereon a data structure, comprising a single segment data object having a header record and a data record, the header record having a segment length field containing data representing a length of memory reserved for the data record of the single segment data object and the data record containing data representing at least one data instance object, each data instance object having a data instance header including a data instance state field and a data instance length field, each data instance object further having a data instance data field, the data instance length field containing data representing length information of the data instance data field and the data instance data field containing data having an object state represented by data contained in the data instance state field, only one of the data instance objects of the data record of the single segment data object having a valid object state.