Accessing data in a multi-generation database

摘要

A method for accessing data in a multi-generation database is provided. The method comprises receiving a request to access first data in the database, wherein the first data is located on a first page of the database; reading an entry corresponding to the first page to locate a first track on the first page to access a newest version of the data; acquiring a first lock to synchronize accesses to the first track; and determining that the first track stores the newest version of the data, in response to reading the entry while holding the first lock.