Systems and methods to optimize multi-version support in indexes
A technology of indexing and data processing systems, applied in the field of database management
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[0024] The making and using of the presently preferred embodiments are discussed in detail below. It should be appreciated, however, that the present disclosure provides many applicable inventive concepts that can be implemented in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.
[0025] The invention discloses a database (database, DB) management system and method, which greatly optimizes the multi-version support of the index managed by the DB. In one embodiment, one focus is on extensions to standard B-trees to support multiple versions through a record-based approach without rolling back historical versions of index records. B-trees support three main operations: insert (key, record identifier (RID)), delete (key, RID), and lookup given a key range. For multi-version concurrency control (MVCC) support, these operations are extended ...
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