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Re: Writing a Movie Datab

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"Larry Barowski" <MElarrybar-AT-eng_DOT_auburnANOTHERDOTeduEND> wrote:

>
>"David Segall" <david@address.invalid> wrote in message 
>news:lbvfo2djiv6kfdlrh3tugcrcgh74jrdiij@4ax.com...
>> It is unlikely that one programmer can write code that outperforms the
>> code written by teams of open source programmers or those from IBM,
>> Oracle or Microsoft. Their code has been subjected to competitive
>> benchmark timing tests over many years.
>
>I don't get your argument here. General purpose database software is
>competitive in the sense that it is compared to other general purpose
>database software. Not using such software may be orders of magnitude
>faster than using it, depending on the purpose.
>
>> How can from tens to hundreds of lines of Java be simpler than one SQL
>> statement and, at most, five template lines of Java to execute it?
>
>It would be simpler in the project sense rather than the lines-of-code
>sense.
>
>> The database software consists of a couple jar files that must be
>> included with the application. Derby requires about 2MB which would
>> only be a problem if you were writing software for a microwave oven.
>
>Those jar files are fairly large though. I work on a medium-sized
>(250 KLOC) project which is about a 3 meg download. Adding the
>necessary jar files from Derby would slightly more than double the
>download size and load on our servers. We have lots of data that is
>accessed by single keys only, which is stored in a custom
>flat-files+index-files database. For efficiency, the data is organized
>and accesses are cached in a very domain-specific way. Using
>standard database software would be several times slower at best,
>and the difference in speed would be noticeable to users.
>
I thought I covered your application in my response to your first post
which was "Apart from a few read-only applications like the main
dictionary of a spell checker what advantage is there in not using a
database?" I cannot question your analysis of your own application.
However, I think that your advice to the OP who has a standard CRUD
application is wrong. There are probably applications that should use
their own implementation of java.text but, for the rest of us, a
library of optimised, pre-tested code that we don't need to write or
maintain is far superior.

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Re: Writing a Movie Datab "Larry Barowski" <larry.barowski@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000
  Re: Writing a Movie Datab "David Segall" <david.segall@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000
    Re: Writing a Movie Datab "Larry Barowski" <larry.barowski@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000
      Re: Writing a Movie Datab "David Segall" <david.segall@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000
        Re: Writing a Movie Datab "Larry Barowski" <larry.barowski@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000
          Re: Writing a Movie Datab "David Segall" <david.segall@THRWHITE.remove-dii-this> - 2011-04-27 15:27 +0000

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