passing class or datareader via webservice

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I have a broad question about Web Services and SOA. I have a database that contains data I would like to expose for reading (just reading, no inserts or updates). Is it best to expose the data as a class or is it best to expose the information as a datareader?

Posted 13-Jan-11 8:56am

css-bp

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Solution 2

It' considered "best practice" to expose only the data that is relevant for the client. It's usually a good idea not to expose the data source (database) directly.

If this is an inhouse, intranett application, it can make sense to access the database server directly. It's probably cheaper to develop.

Regards
Espen Harlinn

Posted 13-Jan-11 12:15pm

Espen Harlinn

Updated 13-Jan-11 12:16pm

v2

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dan!sh 13-Jan-11 18:19pm

Since OP has mentioned WCF, TCP binding would provide similar experience, isn't it? That will provide more flexibility in case similar thing is to be made available to outer world as well.

Espen Harlinn 13-Jan-11 18:28pm

You're right, but better always comes at a cost - we all know there is no such thing as a free lunch :) Cutting out the middle tier usually makes development cheaper. Standard Binary Serialization over TCP/IP still has a horrible performance overhead. Take a look at this article: http://www.codeproject.com/KB/dotnet/FastSerializer.aspx.

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*dan!sh* · Accepted Answer · 2011-01-13T11:55:00

Solution 1

It must be a class. Client applications should not be knowing anything about database.

Posted 13-Jan-11 11:55am

dan!sh

Comments

css-bp 13-Jan-11 18:11pm

Thank you