ASP.NET Stored Procedures
A stored procedure in database management systems is a collection of Transact-SQL statements that are compiled into a single execution plan. It provides a way to encapsulate and execute repetitive or complex tasks within the database.
By writing and saving a stored procedure in the database, you can simplify the execution of commonly used queries or operations. Instead of writing the same query multiple times, you can define a stored procedure once and then invoke it whenever needed. This not only improves code reusability but also enhances performance by reducing the need to compile and optimize the query each time it is executed. A sample Stored Procedure is given below :
The above code create a procedure named as 'SPAUTHORS' and it execute SQL statement that select all authors last name from authors table from the PUB database. Coding business logic into a single stored procedure offers a single point of control for ensuring that business rules are correctly enforced and improve performance.
Intermediary between users and the underlying database tables
Stored procedures also offer security benefits by acting as an intermediary between users and the underlying database tables. Users can be granted access to execute specific stored procedures without requiring direct access to the underlying tables. This provides a layer of abstraction and allows for better control and management of database access.
In ADO.NET, the Command object provides various Execute methods that facilitate the execution of SQL queries and stored procedures. These methods allow you to perform SQL operations in a flexible and customizable manner. You can use parameters to pass values to the stored procedure and retrieve results as needed.
To call a stored procedure from ASP.NET , set the CommandType of the Command object to Stored Procedure.
Some of the commonly used Execute methods in the Command object include ExecuteNonQuery, ExecuteScalar, and ExecuteReader. These methods enable you to execute SQL queries and stored procedures and retrieve the results in different ways, depending on your requirements.
From the following source code you can see how to call a stored procedure from an ASP.NET application.Default.aspx
By using stored procedures and the Execute methods in ADO.NET, you can enhance the efficiency, security, and maintainability of your database operations. It provides a structured approach to query execution and enables code reusability, resulting in more manageable and optimized database interactions within your applications.