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The Database Renewing System (UPGRADE)

The development of this system is an example of new technologies' appearance due to a practical necessity. It was realized alongside with the JurInform project. The information system can be installed to a user computer who bought the product. The juridicial database is replenished very fast, especially in Belarus. That's why there appeared a necessity of creating a sufficiently efficient renewing system so that the user wouldn't rerecord the whole database each time.

UPGRADE system allows to create special renewal files containing just a changed portion of database. The process looks like this:

  1. Database is replenished and modified at information supplier's (on the host);
  2. A file of renewal is created on the host with the help of LeoBase procedure, beginning with the moment of last renewal and up to the present moment. The size of the file is optimized up to the limit;
  3. The file is sent to the database user and is processed there by LeoBase which serves for renewal reading.

Logically, UPGRADE system can be detached from LeoBase and can be used with other DBMSs. One should note that changing data in the process of reading an UPGRADE file is carried out with indices blocking. It speeds up the finishing phase of UPGRADE.

See also Possibilities And Requirements Of UPGRADE


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