PL/SQL is a very secure functionality tool for manipulating, controlling, validating, and restricting unauthorized access data from the SQL database.
Using PL/SQL we can improve application performance. It also allows to deal with errors so we can provide user friendly error messages.
PL/SQL have a great functionality to display multiple records from the multiple tables at the same time.
PL/SQL is capable to send entire block of statements and execute it in the Oracle engine at once.
Procedural language support : PL/SQL is a development tools not only for data manipulation futures but also provide the conditional checking, looping or branching operations same as like other programming language.
Reduces network traffic : This one is great advantages of PL/SQL. Because PL/SQL nature is entire block of SQL statements execute into oracle engine all at once so it's main benefit is reducing the network traffic.
Error handling : PL/SQL is dealing with error handling, It's permits the smart way handling the errors and giving user friendly error messages, when the errors are encountered.
Declare variable : PL/SQL gives you control to declare variables and access them within the block. The declared variables can be used at the time of query processing.
Intermediate Calculation : Calculations in PL/SQL done quickly and efficiently without using Oracle engines. This improves the transaction performance.
Portable application : Applications are written in PL/SQL are portable in any Operating system. PL/SQL applications are independence program to run any computer.