Buffer Manager

Overview of Query Processing

The great majority of connections with the DBMS follow the path on the left side of following figure. A user or an application program starts some action that does not affect the diagram of the database

Storage and Buffer Management

The data of a database generally exists in secondary storage; in today's computer systems secondary storage" generally means magnetic disk. However, to carry out any useful operation on data,

Transaction Processing

It is normal to group one or more database operations into a transaction, which is a unit of work that must be carried out atomically and in obvious separation from other transactions. In addition

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