Virtually updating data records by assigning the update fractional addresses to maintain an ordinal relationship without renumbering original records

摘要

A method of updating a database of records with an update database assigns fractional pseudo addresses to each of the update records. If an update database exists, the update records are first read within the range defined by a desired integer database address and the next greater integer address and those records are read preferentially over comparable records of the original database. Pseudo addresses associated with a delete address pointer serve the function of deleting records while duplications between the update pseudo addresses and the original physical addresses of the database allow changing of the records of original database.