| 摘要 |
Systems (and corresponding methods) that unbundle the kernel or storage engine of a database system are provided. The unbundling separates transactional aspects from storage aspects. The two components of the storage engine resulting from the unbundling are a transaction component (TC) and a data component (DC). Data storage access methods are implemented in the DC without the added complexity of dealing with transactions, which are handled separately in the TC. The interface supported by the DC is a logical interface, e.g., record oriented, in which the way that records are mapped to disk pages (or flash memory blocks, etc.) need not be exposed. The TC then deals with logical locking and logging, meaning that it need know nothing about the way pages are used in the DC.
|
