| 摘要 |
<p>PROBLEM TO BE SOLVED: To securely preserve business data in multiple geographically-distant bases without sacrificing processing speed.SOLUTION: A data management system 10 includes: a first AP server 14, a first DB server 16, and a second DB server 18 installed in a first data center 12; and a second AP server 22, a third DB server 24, and a fourth DB server 26 installed in a second data center 20. All the DB servers have common tables, and on each table a constraint is imposed to prohibit deletion and update of a record. Each AP server is connected with all the DB servers. A business processing unit 30 generates business data using an ID made up of artificial keys issued by an artificial key management unit 32 as a main key, and transmits it to each DB server via a data control unit 34 and each DB contact unit 38. Until receiving reception completion notice from all the DB servers, the business processing unit 30 does not refer to the business data.</p> |
