On Sun, 30 Dec 2012 02:53:33 +0000, Lyle <webmas...@cosmicperl.com> wrote:
> Hi All, > Whilst working on another project it made sense to write a tool for > comparing the various RDBMSs. I'm talking about the database management > systems themselves, not databases within them. So far I've done parts > that use $dbh->type_info_all() to compare what types SQL Server, > Postgres, Oracle and MySQL have available and their details. Generating > reports like: > http://cosmicperl.com/rdbms/compare_types.html > http://cosmicperl.com/rdbms/compare_type_details.html Very useful indeed, but I'm afraid that it also depends on the version of the database(s). I've done several talks about the deficiencies of RDBMS's and basically, there is no perfect database: they all have their hatred areas *). Choose the one that best fits your current needs (even if that is a flat-file solution). What would you need (as perl-script output) to extend that info for DBD::Unify (which I still have access to) and DBD::CSV, DBD::SQLite *) http://tux.nl/Talks/DBDc/quo1.html http://tux.nl/Talks/DBDc/name.html http://tux.nl/Talks/DBDc/null.html > I'm not yet sure as to whether the mapping from the RDBMSs local sql > type to the ones the DBI recognises is done by the DBD driver, or > whether this is already predetermined by the RDBMS... > > Let me know if this isn't interesting to you all and I'll keep it off list. > > Lyle > -- H.Merijn Brand http://tux.nl Perl Monger http://amsterdam.pm.org/ using perl5.00307 .. 5.17 porting perl5 on HP-UX, AIX, and openSUSE http://mirrors.develooper.com/hpux/ http://www.test-smoke.org/ http://qa.perl.org http://www.goldmark.org/jeff/stupid-disclaimers/
