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This article mainly explains "how to master ADO.NET technology". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to master ADO.NET technology.

In the process of using .NET, database access is a very important part, especially in the construction process of Bamp S system, database operation has almost become an indispensable operation. Calling stored procedures to implement database operations is a method that many programmers use, and most programmers can use stored procedures instead of SQL statements directly, so stored procedures are very useful and important.

A brief introduction to stored procedures of ADO.NET Technology

To put it simply, a stored procedure is an encapsulated process composed of SQL statements and control statements, which resides in the database and can be called by a client application or from another procedure or trigger. Its parameters can be passed and returned. Like function procedures in an application, stored procedures can be called by name, and they also have input and output parameters.

Depending on the type of return value, stored procedures can be divided into three categories: stored procedures that return recordsets, stored procedures that return numeric values (also known as scalar stored procedures), and behavioral stored procedures. As the name implies, the execution result of a stored procedure that returns a recordset is a recordset. A typical example is to retrieve records that meet one or more conditions from a database; a stored procedure that returns a value returns a value after execution, such as executing a function or command with a return value in a database. * the behavior stored procedure is only used to implement a function of the database without returning a value, such as update and delete operations in the database.

Benefits of using stored procedures

Calling a stored procedure directly in an application has the following advantages over using SQL statements directly:

(1) reduce the network traffic. Calling a stored procedure with a small number of rows may not be much different from calling SQL statements directly, but if the stored procedure contains hundreds of lines of SQL statements, its performance is definitely much higher than that of calling SQL statements one by one.

(2) the execution speed is faster. There are two reasons: first, the database parses and optimizes the stored procedure once when it is created. Second, once the stored procedure is executed, a copy of the stored procedure is kept in memory so that the next time the same stored procedure is executed, it can be called directly from memory.

(3) stronger adaptability: because the stored procedure accesses the database through the stored procedure, the database developer can make any changes to the database without changing the stored procedure interface. and these changes will not affect the application.

(4) layout work: the coding of the application and the database can be carried out independently without suppressing each other.

At this point, I believe you have a deeper understanding of "how to master ADO.NET technology". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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