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11/20/2007 2:35 PM

Leandro Filipczyk

Joined: 9/12/2007

Posts: 38

dnn two databases?

Hi all, i have a (perhaps noob) question, but why is there two different databases in dnn? i have one that takes care of all the site info and its created during instalation (named according to all tutorials DotNetNuke) located in the sqlserver folder and another one used in the modules development tutorials called "database.mdf" in app_data. Now im trying to develop my first module and dont know where to put a connection string for the secoind one, or where to put the table structure to support the mopdules data accessing.

Can someone put some light in here please?

Tanks a lot.

11/20/2007 2:56 PM

Will Strohl

https://upendoventures.com
Joined: 3/1/2005

Posts: 2884

Re: dnn two databases?

The DB in your App_Data directory is mainly supposed to only be used for development purposes, and locally on your machine. The other DB you mention is meant for a deployed DNN installation. Deviating from that pattern is possible, but I would not recommend it. However, DNN is only using one of those DBs. Your connection string will tell you which is being used. (On a side note, I wouldn't develop modules using the local DB either.)

Your connection string in the ConnectionStrings node and in AppSettings are supposed to be the same. If they are not, change the one in AppSettings to match the one in ConnectionStrings. The ConnectionStrings connection string is the one where the DNN instance was actually installed.

As far as developing your module, the database location shouldn't matter as long as you're using the data provider development pattern.

Will Strohl

Upendo Ventures
DNN experts since 2003
Official provider of the Hotcakes Commerce Cloud and SLA support

11/20/2007 3:18 PM

Leandro Filipczyk

Joined: 9/12/2007

Posts: 38

Re: dnn two databases?

Tnks a lot for the quick response, now i understand better some issues.

Tnks again

11/20/2007 3:49 PM

Will Strohl

https://upendoventures.com
Joined: 3/1/2005

Posts: 2884

Re: dnn two databases?

No problem. I am glad to help.

Will Strohl

Upendo Ventures
DNN experts since 2003
Official provider of the Hotcakes Commerce Cloud and SLA support

11/21/2007 10:38 AM

Mitchel Sellers

www.mitchelsellers.com
Joined: 1/24/2007

Posts: 7846

Re: dnn two databases?

I just want to reiterate will's comment about NOT using the .mdf file located in the app_data folder. I do not use them as I find that it causes more problems in the long run, that is why ALL of my tutorials talk about using a specifically created DNN database.

-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.

Visit mitchelsellers.com for my mostly DNN Blog and support forum.

Visit IowaComputerGurus.com for free DNN Modules, DNN Performance Tips, DNN Consulting Quotes, and DNN Technical Support Services

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