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SqlDataReader Vs SqldataAdapter

Posted By: Deco     Posted Date: January 10, 2012    Points:5   Category :ASP.Net
We are designing an application where the Hits would be around 60-100 per second

if it's a scenario what would be faster, Connected architecture or a disconnected architecture

The output result set from the database would be around 100 to 500 records

Instead of sending me the Links or URL, Please provide me with your real time experience

Responses
Author: Narayanan             
Posted Date: January 16, 2012     Points: 20   
Author: Naresh Godera             
Posted Date: February 07, 2012     Points: 20   

Hi,

SqlDataReader is no doubt faster than a SqlDataAdapter as the DataReader reads data in a forward only mode and you can get a specific type of value returned back to you, such as a string or int etc... however with the SqlDataAdapter, it will fill a datatable or dataset will records it finds in your select statement, taking with it the correct value type for the columns and is a disconnected representation of in memory database and is ideal and easier to use if you are going to show large amounts of records to a binding source, as with a SqlDataReader, it is not possible but to only obtain a value for a column you specify per row.



The SqlDataAdapter also allows you to Update, Delete or Insert rows into the Dataset/DataTable which is an advantage and will execute the appropriate command, if you implemented it correctly, based on how the rows were modified in the Dataset/DataTable.



SqlDataAdapter is expensive compared to a fast forward read on the SqlDataReader, and has more advantages but entirely depends on your solution and what you require.



You are stating that you are going to show alot of records, whilst that is all very well, it would be even better for the benefit of the performance and memory usage to only obtain records that you require to be shown and a SqlDataAdapter would be suitable for this also but still you are required to select records which are the ones you will most likely show to the user, either by input search criteria, or perhaps by paging.






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