Updating a dataset in vb net
Also, if the amount of data is so large that holding it in memory is impractical, you will need to use Sql Data Reader for read-only data.Really, one could come up with all kinds of exceptions, but the true guiding force should be the requirements of your application which will influence what your design should be.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.
The Sql Data Adapter holds the SQL commands and connection object for reading and writing data.For example, the Sql Data Adapter performs the following tasks when filling a Data Set with data: In between the Fill and Update operations, data source connections are closed and you are free to read and write data with the Data Set as you need.These are the mechanics of working with disconnected data.You then have to make a decision, based on the nature of how the data will be used as to your strategy.Use disconnected data when your information is primarily read only, but consider other alternatives (such as using Sql Command object for immediate update) when your requirements call for something more dynamic.
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SQLite Data Adapter is used in conjunction with SQLite Connection and SQLite Command to increase performance when connecting to SQLite.