Lifecycle management for data in non-volatile memory including blocking creation of a database savepoint and associating non-volatile memory block identifiers with database column fragments

Abstract

Systems and methods for integrating the lifecycle of nonvolatile memory blocks with the transactional guarantees of a database are disclosed. One method includes creating a first fragment of a first database column in a volatile memory system, receiving a first pointer to a first block of a second non-volatile memory (NVM) system, the first block associated with the first fragment of the first database column, and populating the first block of the second non-volatile memory system using the first pointer. The method further includes committing the first block of the second non-volatile memory system and associating a first block identifier of the first block of the second non-volatile memory system with the first fragment of the first database column, while blocking creation of a database savepoint, and then unblocking creation of the database savepoint. A block key associated with a first fragment may comprise various identifiers such as block, column, table and partition identifiers. A first fragment may be a main column fragment and comprise a first dictionary such as sorted dictionary, while a second fragment may be a delta column fragment and comprise a second dictionary, which may be a non-sorted dictionary.