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To read records you must create a loop that contains a call to . I cannot tell you the number of times I forgot this when working with recordsets in classic ADO.

In ADO, if we used a client-side Recordset, our data was disconnected from the data source.

A Data Set is an in-memory data store that can hold numerous tables.

Data Sets only hold data and do not interact with a data source.

In Lesson 4, we learned about how to read data quickly an let go of the connection with the Sql Data Reader.

This Lesson shows how to accomplish something in-between Sql Connection and Sql Data Reader interaction by using the Data Set and Sql Data Adapter objects.

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The properties of the Sql Data Adapter object update the database with the data modifications that are run on a Data Set object.In order to transmit changes back to the data source, we used ADO's Update Batch method.Data Reader Data Reader is used to read the data from database and it is a read and forward only connection oriented architecture during fetch the data from database.Data Reader directly access the table and it is only used for reading the records from it whereas dataadapter, used to maintain connection, is always used with dataset as dataset is of disconnected-architecture in nature.In Lesson 3, we discussed a fully connected mode of operation for interacting with a data source by using the Sql Command object.




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