Abstract: A method and a system for converting and replicating data stored in a source database into target database without a load of the source database due to a replication operation. The system includes a first operating server for the source database, a second operating server for the target database, and a replication server extracting a structured query language (SQL) transmitted from a client to the source database in a network stream transmitted from a client to the first operating server and transmit the converted data structure to the second operating server, thereby synchronizing the source database with a replication database.

Abstract: Disclosed herein are a data consistency verification method and a system therefor, which are capable of efficiently verifying consistency of a large amount of data while minimizing a load of a source database by collecting and analyzing patterns of data changes in the source database, classifying the patterns of data changes into a time value or a numerical value range of a data change column, and grouping and comparing the classified patterns of data changes.

Abstract: The present invention relates to a method for generating a plurality of kinds of derivative data in one database and relates to a method and a system for converting and replicating data stored in a separate source database into a separate data structure without a load of the source database due to a replication operation. The system includes a first operating server configured to operate a source database, a second operating server configured to operate a separate data base management system (DBMS), and a replication server configured to extract a structured query language (SQL) transmitted from a client to the source database in a network stream transmitted from a client to the first operating server and transmit the converted data structure to the second operating server, thereby synchronizing the source database with a replication database.