The advantages of Oracle stored procedures include: simplifying complex operations, reducing the probability of errors, fast execution speed, and good adaptability. Its disadvantages include poor portability, occupying more resources on the server side, and increasing server pressure.
Oracle is a relational database management system developed by Oracle Corporation. It is favored by everyone because of its good system portability, ease of use and powerful functions. Next, I will introduce to you the advantages and disadvantages of Oracle database in stored procedures in the article. I hope it will be helpful to you
[Recommended courses: Database Tutorial】
Stored Procedure
A stored procedure refers to a set of procedures to complete A set of SQL statements with specific functions is compiled and stored in the database. The user can execute it by specifying the name of the stored procedure and giving parameters. This method saves the user's time and improves the execution efficiency of the program. There are some system default stored procedures in the database, which can be called directly by raising the name of the stored procedure. In addition, stored procedures can also be called in programming languages, such as Java, C#, etc.
Advantages of stored procedures
(1) Simplifies complex operations
Encapsulate multiple SQL statements into an independent unit in the stored procedure, and the user only needs to call it. This increases the independence of the data. In addition, when the data structure changes, the stored procedure can be modified to implement it, so that there is no need to modify the program code and improves security
(2) Reduces the probability of errors
If you do not use stored procedures to implement an operation, you may need to execute multiple separate SQL statements. Executing too many steps may cause errors. When using a stored procedure, you only need to compile it once and call it directly
(3) Fast execution speed
When the stored procedure is created, the database has already parsed and optimized it. In addition, after the stored procedure is executed, a copy will be retained in the memory, so it can be directly called in the memory the next time it is executed
(4) Good adaptability.
Since stored procedures access the database through stored procedures, database developers can make any changes to the database without changing the stored procedure interface, and these changes will not cause any impact on the application. Influence.
Disadvantages of stored procedures
(1) If the scope of the change is large enough to require changes to the parameters input to the stored procedure, or to change the data returned by it, this When the parameters in the program need to be changed, this increases the difficulty
(2) Poor portability. Since the stored procedure binds the application to SQL Server, using stored procedures to encapsulate business logic will limit the portability of the application. Portability.
(3) It occupies more resources on the server side and puts a lot of pressure on the server
(4) The readability and maintainability are not good
Summary: The above is That’s all the content of this article, I hope it will be helpful to everyone
The above is the detailed content of Advantages and Disadvantages of Oracle's Stored Procedures. For more information, please follow other related articles on the PHP Chinese website!