When was ado net introduced

Oracle: The System. OracleClient namespace. The Oracle client software must be installed on the system before you can use the provider to connect to an Oracle data source.

Data Provider Components The four key components of a dataprovider are: Connection: Used to connect to the data source. Command: Used to execute a command against the data source. This component retrieves, inserts, deletes, and modifies data in a data source. DataReader: This component retrieves data from a data source in read-only and forward mode. DataAdapter: Used to populate a dataset with the data retrived from a database and to update the data source. DataSet DataSet is a part of a disconnected architecture.

A DataSet is a cached memory of data retrieved from a database. DataSet is present in the System. Data namespace. In order to connect a DataSet to a data source, we need to use a DataAdapter. NET Creating a Connection object The connection component of a dataprovider establishes a connection with a data base. The following are the commonly used properties and Methods of the SqlConnection class.

ConnectionString: provides information, such as database name and, user credentials for database access and so on. Open : Opens the connection for accessing the database. Close : Closes the connection to the database. Data Source: Specifies the provider name or your server name.

Initial Catalog: Specifies the name of the database. User Id and Password: Provide the username and password of your database server. As a member of the development team, you have been asked to develop an application that will display all the records from tblEmployee table present in the sample database. Note: In this example I'm using a sample database present in my datasource. Here you need to create a sample database and the tblEmployee table in that database, and populate the tblEmployee table with some values.

Step 1: Create a Windows Form application and design the form as shown in the following figure. Step 2: Add the following two namespaces: System. SqlClient; System.

NET samples and tutorials. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services.

Privacy policy. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Yes No. These assemblies do not collect, store, or transport any user's private data.

However, third-party applications might collect, store, or transport a user's private data using these assemblies.

NET and provides links to relevant topics. NET Framework data provider and of the. NET versions and their effect on side-by-side execution and application compatibility.

NET data providers. What's New in ADO. Securing ADO. NET Describes data type mappings between. NET Framework data types and the. NET Framework data providers. NET Describes how to connect to a data source, retrieve data, and modify data. This includes DataReaders and DataAdapters.

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