US Patent 9665609 Garbage collection of multi-version concurrency control (MVCC) data blocks

Disclosed herein are system, method, and computer program product embodiments for performing garbage collection in a database management system with a multi-version concurrency control. An embodiment operate by qualifying a multi-version concurrency control (MVCC) block for garbage collection, where the MVCC block includes multiple cells, each cell corresponding to a row of a table that was acted on by a transaction. Determining that the MVCC block can be garbage collected based on MVCC information in the MVCC block, where the MVCC information includes information that determines whether changes made to rows in the multiple cells are visible in a database management system. Based on the determining, garbage collecting the MVCC block.