Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
Thanks to any and all replies.
24  2096 
sonos wrote:
Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
That's your call. You can either start out with a database, or start
out with your own implementation, depending on the complexity of the
data set, the target platform, performance requirements and a host of
other variables.
There isn't a simple answer.
--
Ian Collins.
On Aug 24, 3:42 pm, Ian Collins <ian-n...@hotmail.co mwrote:
sonos wrote:
Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
That's your call. You can either start out with a database, or start
out with your own implementation, depending on the complexity of the
data set, the target platform, performance requirements and a host of
other variables.
There isn't a simple answer.
--
Ian Collins.
OK, thanks. Can you give an example of a simple C data set, a
moderately complex data set, and a data set clearly meant for a
relational database engine?
sonos wrote:
On Aug 24, 3:42 pm, Ian Collins <ian-n...@hotmail.co mwrote:
>sonos wrote:
>>Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
That's your call. You can either start out with a database, or start
out with your own implementation, depending on the complexity of the
data set, the target platform, performance requirements and a host of
other variables.
There isn't a simple answer.
*Please don't quote signatures*
>
OK, thanks. Can you give an example of a simple C data set, a
moderately complex data set, and a data set clearly meant for a
relational database engine?
No, because of the other variables I mentioned. I have implemented very
complex database engines in C for embedded platforms where we couldn't
find a database engine that would work on that platform. I have also
used a database (because it was there) to perform simple archiving on
hosted platforms.
You have to weigh up the situation and go for what's best for you. On a
hosted platform, I'd use a database for all but the most basic
applications so long as performance wasn't a issue, just to save the
trouble of writing and testing my own.
--
Ian Collins.
On Aug 24, 1:17 pm, sonos <dspcyp...@gmai l.comwrote:
Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
Only when you care about your data.
Thanks to any and all replies.
sonos skrev:
Hi,
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
Thanks to any and all replies.
I would sugest using PostgreSQL and it's c library... http://www.postgresql.org/docs/8.1/static/libpq.html
Carramba said:
sonos skrev:
>>
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
I would sugest using PostgreSQL and it's c library...
It might be better to move comparative databasology discussions to a
database programming newsgroup. FTR, I don't see any reason for the OP
to avoid MySQL; a database programming newsgroup might, so why not ask
them?
--
Richard Heathfield <http://www.cpax.org.uk >
Email: -www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999
On 2007-08-26 18:00, Carramba <ca******@examp le.comwrote:
sonos skrev:
>I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
* If you need or want to manipulate your data with other tools than
your program.
* If your data fits well into the relational model.
* If you want to access your data from other hosts
* If you need transactions, constraints, or other services
ordinarily provided by an RDBMS.
>Thanks to any and all replies.
I would sugest using PostgreSQL and it's c library...
http://www.postgresql.org/docs/8.1/static/libpq.html
No. PostgreSQL is not a C library. It comes with a C library which
simplifies sending queries to the server. The database engine itself is
running as a separate process.
There are SQL engines implemented as libraries: SQLite, the MS Jet
engine (used by MS Access), embedded MySQL, etc.
hp
--
_ | Peter J. Holzer | I know I'd be respectful of a pirate
|_|_) | Sysadmin WSR | with an emu on his shoulder.
| | | hj*@hjp.at |
__/ | http://www.hjp.at/ | -- Sam in "Freefall"
On 2007-08-26 19:33, Peter J. Holzer <hj*********@hj p.atwrote:
On 2007-08-26 18:00, Carramba <ca******@examp le.comwrote:
>sonos skrev:
>>I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
* If you need or want to manipulate your data with other tools than
your program.
* If your data fits well into the relational model.
* If you want to access your data from other hosts
* If you need transactions, constraints, or other services
ordinarily provided by an RDBMS.
Forgot the most important reason (and the one least off-topic here):
* The queries you want to make are easier to express in SQL than in C.
hp
--
_ | Peter J. Holzer | I know I'd be respectful of a pirate
|_|_) | Sysadmin WSR | with an emu on his shoulder.
| | | hj*@hjp.at |
__/ | http://www.hjp.at/ | -- Sam in "Freefall"
On Aug 26, 2:33 pm, "Peter J. Holzer" <hjp-usen...@hjp.atw rote:
On 2007-08-26 18:00, Carramba <carra...@examp le.comwrote:
sonos skrev:
I am working on a program to archive data to disk.
At what point is it best to use a relational database like MySQL as
the backend instead of a C program alone?
* If you need or want to manipulate your data with other tools than
your program.
* If your data fits well into the relational model.
* If you want to access your data from other hosts
* If you need transactions, constraints, or other services
ordinarily provided by an RDBMS.
It just seems to me that w/ the current uC computational power,
performance return from a relational database engine is not really
much better than C. Or is it that a SQL query is faster to code than
to hard code the C program? As to remote access, that does not really
pose a problem w. POSIX. Or, were you thinking about concurrent use of
a file? i.e. is contention easier to manage w. a RDB engine compared
to root file systems? And I guess that poses another perspective; C
programs must have a root filesystem (and less portability) whereas
a .db file can be easily ported to another OS? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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