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Programming the Perl DBI
book

Programming the Perl DBI

by Tim Bunce, Alligator Descartes
February 2000
Intermediate to advanced content levelIntermediate to advanced
364 pages
11h 47m
English
O'Reilly Media, Inc.
Content preview from Programming the Perl DBI

Architecture of a DBI Application

The API, or Application Programming Interface, defines the call interface and variables to Perl scripts to use. The API is implemented by the Perl DBI extension (see Figure 1.1).

DBI application architecture
Figure A-1. DBI application architecture

The DBI “dispatches” the method calls to the appropriate driver for actual execution. The DBI is also responsible for the dynamic loading of drivers, error checking and handling, providing default implementations for methods, and many other non-database-specific duties.

Each driver contains implementations of the DBI methods using the private interface functions of the corresponding database engine. Only authors of sophisticated/multi-database applications or generic library functions need to be concerned with drivers.

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Publisher Resources

ISBN: 1565926994Supplemental ContentErrata Page