With respect to usage, there is no difference between OLEDB Provider and Sql Client. Sql Client is explicitly used to connect your application to SQL server directly, OLEDB Provider is generic for various databases, such as Oracle and Access including SQL Server.
Collapsiblepanelextender prevents updating
Object pooling is a concept of storing a pool (group) of objects in memory that can be reused later as needed.
Whenever, a new object is required to create, an object from the pool can be allocated for this request; thereby, minimizing the object creation.
Any changes and operations done on the data are saved in a local copy (dataset) that acts as a data source.
Whenever, the connection to the server is re-established, these changes are sent back to the server, in which these changes are saved in the actual database or data source.
NET: Provides various data providers that are specific to databases produced by various vendors. NET has a separate provider to access data from Oracle databases; whereas, another provider is used to access data from SQL databases.
Language-Integrated Query (LINQ) - Adds native data-querying capabilities to .
NET languages by using a syntax similar to that of SQL.
This means that LINQ simplifies querying by eliminating the need to use a separate query language.
The Data Reader object enables faster retrieval of data from databases and enhances the performance of .
NET applications by providing rapid data access speed.
NET applications until other clients free the resources.