Some questions about the storage system: How PostgreSQL store tuples? Using the Postgre (no SQL) mechanism of an anchor pointer (to the original tuple) and a list of pointers to the (delta tuples) differences with the initial register? Itīs possible access to the value of a tuple in a specified time? Or only acces to the actual value? What function access the value of a tuple from the disk? Thanks everybody. Francisco Javier Cuberos. ************
