Database management system final exam solutions

  • Is database management system tough?

    The DBMS software is complex and requires in-depth knowledge to properly implement and manage.
    But the DBMS interfaces with many other IT components, such as the OS, transaction processing systems, programming languages and networking software..

How does a DBMS check if a transaction is valid?

The basic idea is that each transaction in the Read phase tells the DBMS about items it is reading, and when a transactionTiis committed and its writes are accepted, the DBMS checks whether any of the items written byTi are being rad by any (yet to be validated) transactionTj

If so, we know that Tj’s validation must eventually fail


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