Method for logging update queries

A method of logging update queries in a computer media, comprising:

• evaluating queries that have been queued since a prior cycle;
• responsive to any pages needed for evaluation not in a buffer pool, reading at least one page comprising a PAGE_ID and a largest epoch sub-key;
• executing the queued queries;
• responsive to any queries executed over a horizontal partition involving writes or other updates to that partition, setting a Boolean dirty flag in a MANYCORE device's memory for each column that was updated;
• after executing all outstanding queries for a particular epoch, recording in a log file all queries that are updates that were executed in that epoch, replacing any variables that are evaluated at runtime, with actual values they had at time of execution;
• and
• signifying a commit to the log file and flushing the log file to stable storage.