FirebirdEmbedded(3pm)					User Contributed Perl Documentation				     FirebirdEmbedded(3pm)

NAME

       DBD::FirebirdEmbedded - embedded Firebird server (and client)

SYNOPSIS

	 use DBI;

	 $dbh = DBI->connect("dbi:FirebirdEmbedded:db=$dbname", undef, undef);

	 # See the DBI module documentation for full details

DESCRIPTION

       DBD::FirebirdEmbedded is a variant of DBD::FirebirdEmbedded, linked with the Firebird embedded library, libfbembed. In addition to the
       ability to work with remote Firebird servers (which DBD::FirebirdEmbedded has, being linked with the Firebird client library, libfbclient),
       DBD::FirebirdEmbedded can be used to work with Firebird databases without the need of a dedicated Firebird server.

       The following things should be set up first:

       Username/password
	   These should be unset. Both in the "DBI->connection(...)" call and in the environment ("ISC_USER", "ISC_PASSWORD", "DBI_USER",
	   "DBI_PASSWORD" variables).

       Firebird lock directory
	   The "FIREBIRD_LOCK" environment variable should be set to some place where the process can write. Note that if you plan for several
	   processes to access the database file directly, they all should have "FIREBIRD_LOCK" set to the same directory, or else database
	   corruption will occur.

       No "host" in the DSN
	   Obviously, do not set any host when calling "DBI->connection(...)", not even "localhost".

       Permissions to read/write the database
	   Obviously, the process needs to be able to read/write the database file.

COMPARISON WITH DBD
::FIREBIRD
       DBD::FirebirdEmbedded provides exactly the same functionality as the Firebird server of the same version as the libfbembed library. It
       still can work with remote datases, in which case the use is exactly the same (DSN, environment) as with the regular DBD::FirebirdEmbedded.

   Pros
       Standalone work with Firebird databases
	   No need to setup/administer a Firebird server. All the server functionality is available via the libfbembed library. Shared access to
	   databases is still possible (but read "Firebird lock directory" above).

       No network latency
	   Working directly with the database file elliminates possible network delays (even if the server is on the local host).

   Cons
       Memory footprint
	   The libfbembed library contains a fully functional Firebird server and is therefore bigger than the ordinary client library,
	   libfbclient.

       Setup complexity
	   It is very important to make sure that all processes that access a given database use the same lock directory. See "Firebird lock
	   directory" above.

SEE ALSO

       DBD::FirebirdEmbedded

perl v5.14.2							    2011-11-15						     FirebirdEmbedded(3pm)