Abstract: Various embodiments provide a data stream processing method. The method may include receiving by at least one first processor a data stream comprising first data that includes transactions to be executed on a database, receiving by at least one second processor from the at least one first processor information regarding data access to the database and second data indicative of a time-based order of the transactions, the information extracted from the first data and the second data, receiving by at least one third processor from the at least one first processor the first data, and processing the transactions by the at least one third processor, wherein the at least one second processor provides data access to the database to the at least one third processor based on the time-based order determined from the second data.