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BSA Architecture
Database
Central database
The BSA central database is well-designed relational DB2 that provides fast and simple access to all data. Database technical support ensures data consistency when an unexpected event occurs.
Its design ensures that all banking transactions, regardless of the module of access, use uniform data, e.g. data on the client, exchange rates, chart of accounts, organisational unit codes, interest rates, tariffs, charges, etc.
When working with database, the rule has been observed to secure the legacy data so that they are not effected by any change or deletion. Information on the date, time and operator that initiated the change will be stored.
Distributed local database
These data are rarely changed, but frequently used smaller scope data that are migrated to the workstation - client. Migration of changed data is automated. The local data are compared with the central database upon each login. Only when considered necessary, fresh data are retrieved from the mainframe to the local database. This group of data refer to transaction parameters, account parameters, currency codes, industry codes, codes of bank's organisational units, and many other. Data on the exchange rates prevailing on a specific data are also migrated locally. Distributed local database enables fast formal checking of entered data and processing of transactions.
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