During our copy-on-write we also do not necessarily store the whole record-page (leaf page with data/records), but depending on the versioning algorithm only ch

During our copy-on-write we also do not necessarily store the whole record-page (leaf page with data/records), but depending on the versioning algorithm only changed records since some past state. The sliding snapshot algorithm for instance (with a sliding window) is very clever in balancing read-/write-performance.