How is plsql the same as sql

It can be nested to include another block. These are quite important while writing Triggers. Due to the detail-oriented nature of SQL and that it can directly interact with the databases , SQL statements are a great option for creating analytical reports. Since it writes DML statements, it also finds use in supporting applications where there is a need for simple updating. Essentially, it is designed for data manipulation and does just that. To conclude, it is obvious adding an extra skill to your portfolio is always a good idea.

So expand your skillset and enter the job market with even more confidence! Data Science. Data Science All Courses M. Sc in Data Science — University of Arizona. Software Engineering All Courses M. SQL does not provide support for these features. SQL tells us what data is needed but does not specify how it can be retrieved. In this era, data is the new oil and managing data has been of prime importance, unlike any other time. This reduces network traffic.

This reduces traffic over the network and increases processing speed. This in turn increases the productivity of the programmers as they can create, transform and update data with high speed and accuracy. On the other hand, we can execute a single statement in SQL at a time. October 11, Table Of Contents. What is SQL? Share 0.

Tweet 0. Pin it 0. SQL queries are used to retrieve data from the database; you can either delete or modify the data in the database. SQL is a declarative language which specifies what data is needed. Freshers Engineers View all. Pharma Freshers View all. Once a shared SQL area has been allocated for a statement, it can be executed repeatedly without being reparsed.

Since both parse calls and parsing can be expensive relative to execution, it is desirable to perform them as seldom as possible. When you create a stored procedure, Oracle parses the procedure and stores its parsed representation in the database. Oracle also allows you to create and store functions, which are similar to procedures, and packages, which are groups of procedures and functions.

For information on stored procedures, functions, packages, and database triggers, see Chapter 14 , "Procedures and Packages", and Chapter 15 , "Database Triggers". Figure 11 - 1. For example, you can call a stored procedure from Oracle Forms Version 3 or later. Variables and Constants Variables and constants can be declared within a procedure, function, or package.

Note : Some interactive tools, such as Server Manager, allow you to define variables in your current session. Variables so declared can be used similarly to variables declared within procedures or packages. Cursors Cursors can be declared explicitly within a procedure, function, or package to facilitate record-oriented processing of Oracle data.