नाथद्वारा वल्लभाचार्य के पुष्टिमार्ग का सबसे महत्वपूर्ण केंद्र है और इसलिए इसे वल्लभ शैली भी कहा जाता है। नाथद्वारा के चित्रकारों ने संसार में कृष्ण को ईश्वर की प्रवृत्ति के रूप में चित्रित करना प्रारंभ किया। पिछवाई पेंटिंग, यानी कपड़े पर पेंटिंग, नाथद्वारा में की जाने वाली पेंटिंग की एक विशिष्ट विशेषता है।

A stored procedure is a segment of declarative SQL statements stored inside the database catalog. A stored procedure can be invoked by triggers, other stored procedures or applications such as Java, C#, PHP, etc. Advantages  - Typically stored procedures help increase the performance of the applications. Once created, stored procedures are compiled and stored in the database. However MySQL implements the stored procedures slightly different. MySQL stored procedures are compiled on demand. After compiling a stored procedure, MySQL puts it to a cache. And MySQL maintains its own stored procedure cache for every single connection. If an application uses a stored procedure multiple times in a single connection, the compiled version is used, otherwise the stored procedure works like a query. - Stored procedures helps reduce the traffic between application and database server because instead of sending multiple lengthy SQL statements, the application has to send only name and parameters of the stored procedure. - Stored procedures are reusable and transparent to any applications. Stored procedures expose the database interface to all applications so that developers don’t have to develop functions that are already supported in stored procedures. - Stored procedures are secure. Database administrator can grant appropriate permissions to applications that access stored procedures in the database without giving any permission on the underlying database tables. Disadvantages - If you use a lot of stored procedures, the memory usage of every connection that is using those stored procedures will increase substantially. In addition, if you overuse a large number of logical operations inside store procedures, the CPU usage will also increase because database server is not well-designed for logical operations. - A constructs of stored procedures make it more difficult to develop stored procedures that have complicated business logic. - It is difficult to debug stored procedures. Only few database management systems allow you to debug stored procedures. Unfortunately, MySQL does not provide facilities for debugging stored procedures. -It is not easy to develop and maintain stored procedures. Developing and maintaining stored procedures are often required specialized skill set that not all application developers possess. This may lead to problems in both application development and maintenance phases.

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