1. data integrity. Bank need all data stored on the centeral data center.
2. Easy maintenance, can implement Single Sign On services, such as Kerberos, SESAME, KryptoKnight, NetSP
Centralized disadvantage
1. Data server is a Single point failure
Decentralized Advantage
1. Fast if data are stored distributed
2. If data link to centeral server is broken, operation will not be impacted
Decentralized disadvantage
1. Data consistance maintenance
2. User and file system management is a nightmare
3. System back and recovery is also a nightmare
2. Easy maintenance, can implement Single Sign On services, such as Kerberos, SESAME, KryptoKnight, NetSP
Centralized disadvantage
1. Data server is a Single point failure
Decentralized Advantage
1. Fast if data are stored distributed
2. If data link to centeral server is broken, operation will not be impacted
Decentralized disadvantage
1. Data consistance maintenance
2. User and file system management is a nightmare
3. System back and recovery is also a nightmare