P- The application I sell is quite small and simple embedded db seems easier to deploy. My current install takes just a few minutes and so it doesn't seem like a good idea to have to have my customer have to configure a client/server database I need something quick and simple. I tried out MS SQL express for myself and had to go in and configure TCP setting and other settings which took quite a while. My customers are not tech savvy. My application is cheap so using MySQL doesn't make sense (i do not make my app open source so I have a fee if i use MySQL) I am not familiar with PostGres, do they offer a version that is free to distribute? Is their configuration to the DBMS?
Thanks. P Kishor-3 wrote: > > On Wed, May 26, 2010 at 8:15 PM, jdee5 <jonidm...@yahoo.com> wrote: >> >> >> >> Thanks for your reply. I have read through the link you suggested, very >> helpful...if I may ask another question concerning this. Say on my >> application I have 2 users reading some of the database contents at the >> same >> time and they both log something in my application at the same time. For >> example say they want to both review different customer accounts and add >> a >> payment to the different customer accounts. Would there be a delay with >> both of those when using SQLite, if so would it be significant? >> >> Can I use SQLite this way have my application stored on the server and >> allow >> users on a LAN/peer to peer have the ability to open my app and write to >> it >> at the same time? does this type of multi user access often corrupt the >> database? If my database does become corrupt how can I repair it. >> >> Sorry for the redudancy in the questions...like I said am new to SQL >> (used >> MS SQL a little) and really new to the idea of using an embedded database >> engine. > > > Why do you want to use an "embedded database engine" and want to have > multiple concurrent users changing the db over a network? If you want > to users to be able to change stuff at the same time from different > locations, use a true client/server db such as Postgres or MySQL. > > If you have only a few users who will be changing the data, you could > create a SQLite-powered web app, but there could be potential > instances of lockouts. If you want to put your db on a LAN (shared > disk), and have remote users change it, there is likely a potential > for db to be corrupted. > > > >> >> Thanks in advance for information >> >> >> >> Simon Slavin-3 wrote: >>> >>> >>> On 26 May 2010, at 10:04pm, jdee5 wrote: >>> >>>> I am looking for an SQL engine that is easy to install and sqlite seems >>>> like >>>> the right way to go. I have an application (currently just for network >>>> use >>>> on a LAN) and I want to move to using SQL, my application is fairly >>>> small >>>> and simple and I like the idea of embedding SQL and using SQLite so my >>>> end >>>> user doesn't notice any difference from my current >>>> application...however, >>>> more than 1 person may want to access the db at a time does SQLite >>>> allow >>>> for >>>> this? >>> >>> Yes. SQLite supports locking for multi-user and multi-process access. >>> It >>> is unusual in that it locks the entire database file rather than >>> individual records, but the SQLite calls you make handle multi-user >>> access >>> correctly. You /will/ have to make your application aware of how to >>> handle the errors which arise if one user keeps the database locked so >>> long that the other user can't access it. I recommend you read this >>> page >>> (though you don't have to memorise it all): >>> >>> <http://www.sqlite.org/lockingv3.html> >>> >>>> Can it just sequentially record transactions as they are made even if >>>> made simultaneously... I have search all over and can't come to a clear >>>> conclusion, I am also very new to using SQL. >>> >>> Under most circumstances, even if two programs are entering transactions >>> at the same time, SQLite will handle this without the programs having to >>> be aware of it. However, make sure you handle the SQLITE_BUSY and >>> SQLITE_LOCKED errors correctly. I hope someone can recommend a page >>> which >>> breaks down how to do this. >>> >>> Simon. >>> _______________________________________________ >>> sqlite-users mailing list >>> sqlite-users@sqlite.org >>> http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users >>> >>> >> >> -- >> View this message in context: >> http://old.nabble.com/Novice-SQLite-user-tp28686380p28688425.html >> Sent from the SQLite mailing list archive at Nabble.com. >> >> _______________________________________________ >> sqlite-users mailing list >> sqlite-users@sqlite.org >> http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users >> > > > > -- > Puneet Kishor http://www.punkish.org > Carbon Model http://carbonmodel.org > Charter Member, Open Source Geospatial Foundation http://www.osgeo.org > Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor > Nelson Institute, UW-Madison http://www.nelson.wisc.edu > ----------------------------------------------------------------------- > Assertions are politics; backing up assertions with evidence is science > ======================================================================= > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > -- View this message in context: http://old.nabble.com/Novice-SQLite-user-tp28686380p28688518.html Sent from the SQLite mailing list archive at Nabble.com. _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
