Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about how to analyze the ADO.NET architecture. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

The ADO.NET architecture has a lot to learn. Here we mainly introduce the ADO.NET architecture. Before we introduce the ADO.NET architecture in detail, let us know the skills of using the ADO.NET architecture.

Connect to the SQL database: the Data Source parameter specifies the server name of the computer running SQL Server. If SQL Server is installed as a named instance, specify the server name followed by a backslash and the instance name. If you want to use disconnected data, use DataSet and implement SqlDataAdapter that can read or write to the data source.

The data provider has sub-ADO.NET architecture components: DbConnection, DbCommand, DbDataAdapter, and DbDataReader. They are base classes, and other data provider components can inherit them. They are used to connect to the database, execute SQL commands, retrieve data, and read data, respectively.

The DataSet component can populate the data retrieved by the DataAdapter component from the database, or it can contain a collection of DataTable components. ADO.NET architecture components can not only retrieve data from the database and populate it into DataSet components, but also read data from DataSet components and update the database.

The DataTable component can be used in the DataSet component or alone. It can also use DataAdapter or DataReader components to populate data. DataTable can also be used by DataAdapter to update the database. Connect to the Access database: the Data Source parameter specifies the full path and name of the database to connect to

The Connction class: provides the necessary information to connect to the database.

Sometimes the data you use is mainly read-only, and you rarely need to change it to the underlying data source. Similarly, some situations require caching data in memory to reduce the number of times that unchanged data is called by the database. Data adapter helps you deal with the above situations easily by disconnecting the model. ADO.NET architecture Data adapter populates (fill) DataSet objects when continuous changes in read and write operations to the database in a single batch are returned to the database. Data adapter contains references to connection objects and to automatically open or close connections when reading or writing to a database.

In addition, data adapter contains command object references to SELECT,INSERT,UPDATE and DELETE operations on the data. You will define a data adapter for every table in DataSet, which will take care of all connections to the database for you. All you will do is tell data adapter when to load or write to the database.

ADO.NET is a. Net technology that interacts with data sources. There are many Data Providers that will allow you to communicate with different data sources-depending on the protocol or database they use. However, no matter what Data Provider you use, you will use similar objects to interact with the data source. The SqlConnection object manages the connection to the data source. The ADO.NET architecture allows you to communicate with a data source and send commands to it. To quickly read data "forward" only, use SqlDataReader. If you want to use disconnected data, use DataSet and implement SqlDataAdapter that can read or write to the data source.

The above is how to parse the ADO.NET architecture shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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