February 2000
Intermediate to advanced
364 pages
11h 47m
English
Content preview from Programming the Perl DBI
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The Database Proxy Architecture
The DBI supports database proxying through two modules,
DBD::Proxy
and
DBI::ProxyServer
. DBD::Proxy is used
by client programs to talk to a proxy server that is implemented with
the DBI::ProxyServer module. Figure 8.1 illustrates the
architecture.
 |
Figure 8-1. DBI proxy architecture
Because the DBI::ProxyServer module uses the
underlying database drivers to actually interface with the databases,
any type of database can be queried and manipulated via proxy,
including CSV files and XBase (DBF) files. The DBI proxy architecture
does not restrict you to using high-end databases such as Oracle or
Informix.
So how do we use this proxy server? Let’s look at the common example of a Perl program running on a Unix box that wants to query a Microsoft Access database running on a Windows machine.
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