DBD::Mem(3pm)

1DBD::Mem(3)           User Contributed Perl Documentation          DBD::Mem(3)
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NAME

6       DBD::Mem - a DBI driver for Mem & MLMem files
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SYNOPSIS

9        use DBI;
10        $dbh = DBI->connect('dbi:Mem:', undef, undef, {});
11        $dbh = DBI->connect('dbi:Mem:', undef, undef, {RaiseError => 1});
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13        # or
14        $dbh = DBI->connect('dbi:Mem:');
15        $dbh = DBI->connect('DBI:Mem(RaiseError=1):');
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17       and other variations on connect() as shown in the DBI docs and
18       <DBI::DBD::SqlEngine metadata|DBI::DBD::SqlEngine/Metadata>.
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20       Use standard DBI prepare, execute, fetch, placeholders, etc., see
21       "QUICK START" for an example.
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DESCRIPTION

24       DBD::Mem is a database management system that works right out of the
25       box.  If you have a standard installation of Perl and DBI you can begin
26       creating, accessing, and modifying simple database tables without any
27       further modules.  You can add other modules (e.g., SQL::Statement) for
28       improved functionality.
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30       DBD::Mem doesn't store any data persistently - all data has the
31       lifetime of the instantiated $dbh. The main reason to use DBD::Mem is
32       to use extended features of SQL::Statement where temporary tables are
33       required. One can use DBD::Mem to simulate "VIEWS" or sub-queries.
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35       Bundling "DBD::Mem" with DBI will allow us further compatibility checks
36       of DBI::DBD::SqlEngine beyond the capabilities of DBD::File and
37       DBD::DBM. This will ensure DBI provided basis for drivers like
38       DBD::AnyData2 or DBD::Amazon are better prepared and tested for not-
39       file based backends.
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41   Metadata
42       There're no new meta data introduced by "DBD::Mem". See "Metadata" in
43       DBI::DBD::SqlEngine for full description.
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GETTING HELP, MAKING SUGGESTIONS, AND REPORTING BUGS

46       If you need help installing or using DBD::Mem, please write to the DBI
47       users mailing list at <mailto:dbi-users@perl.org> or to the
48       comp.lang.perl.modules newsgroup on usenet.  I cannot always answer
49       every question quickly but there are many on the mailing list or in the
50       newsgroup who can.
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52       DBD developers for DBD's which rely on DBI::DBD::SqlEngine or DBD::Mem
53       or use one of them as an example are suggested to join the DBI
54       developers mailing list at <mailto:dbi-dev@perl.org> and strongly
55       encouraged to join our IRC channel at <irc://irc.perl.org/dbi>.
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57       If you have suggestions, ideas for improvements, or bugs to report,
58       please report a bug as described in DBI. Do not mail any of the authors
59       directly, you might not get an answer.
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61       When reporting bugs, please send the output of
62       "$dbh->mem_versions($table)" for a table that exhibits the bug and as
63       small a sample as you can make of the code that produces the bug.  And
64       of course, patches are welcome, too :-).
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66       If you need enhancements quickly, you can get commercial support as
67       described at <http://dbi.perl.org/support/> or you can contact Jens
68       Rehsack at rehsack@cpan.org for commercial support.
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AUTHOR AND COPYRIGHT

71       This module is written by Jens Rehsack < rehsack AT cpan.org >.
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73        Copyright (c) 2016- by Jens Rehsack, all rights reserved.
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75       You may freely distribute and/or modify this module under the terms of
76       either the GNU General Public License (GPL) or the Artistic License, as
77       specified in the Perl README file.
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NAME

SYNOPSIS

DESCRIPTION

GETTING HELP, MAKING SUGGESTIONS, AND REPORTING BUGS

AUTHOR AND COPYRIGHT

SEE ALSO