PL/SQL
Jasmine Dang AroraDeputy Manager-Content
PL/SQL is Procedural Language for SQL. It is designed by Oracle Corporation in the early 90's to enhance SQL. It is combination of SQL along with the procedural features wherein it is easy to both read and write. PL/SQL is high performing transaction-processing language, which is completely portable. It dispenses a built-in, interpreted and OS independent programming environment. User can directly call to database from external programming language calls. PL/SQL incoporates procedural language elements such as loops and conditions. It can manage run-time error and allows declaration of constants and variables, procedures and functions, types and variables. In this, all the statements of a block are moved to oracle engine at once which decreases the traffic and increases processing speed.
- Difference between SQL and PL/SQL
- PL/SQL Features
- PL/SQL Advantages and Disadvantages
- 3.1 PL/SQL Advantages
- 3.2 PL/SQL Disadvantages
- PL/SQL Architecture
- PL/SQL Setup Process
- PL/SQL Developer Responsibilities
- PL/SQL FAQs
Difference between SQL and PL/SQL
PL/SQL Features
Following are some key features of PL/SQL:
- It offers several data types.
- It assists object-oriented programming.
- It provides sizeable error checking.
- It is strongly blended with SQL.
- It provides numerous programming structures.
- It can be used in the development of web applications and server pages.
PL/SQL Advantages and Disadvantages
It has the following advantages and disadvantages:
PL/SQL Advantages
- Applications developed in PL/SQL are portable.
- Its strong features saves time on design and debugging.
- Provides access to predefined SQL packages.
- It gives high productivity to programmers as it can query, modify, and upgrade data in a database.
- It supports both static and dynamic SQL wherein Dynamic SQL enables embedding DDL statements in PL/SQL blocks and Static SQL assists in transaction control and DML operations.
- Provides high security level.
PL/SQL Disadvantages
- It uses high memory for storage.
- Roles of front-end developer and back-end developer cannot be fully separated.
- Complex and inconsistent syntax
- Lacks debugging functionality.
- Tough to detach PL/SQL development with HTML development.
PL/SQL Architecture
PL/SQL Setup Process
To setup PL/SQL in a machine, Oracle RDBMS Server should be installed in it. It supervise the execution of the SQL commands. Check the step-by-step process to setup PL/SQL here:
- Launch the Oracle Database Installer using the setup file
- Provide your email ID and check the checkbox and click ‘next’ button
- Uncheck the checkbox and click the ‘continue’ button to proceed
- Select the first option ‘Create and Configure Database’ and click ‘next’ button
- Select the Desktop Class option (if installing Oracle for the basic purpose of learning)
- Provide a location and modify the Oracle Base and the other locations will set automatically
- Click ‘next’ button to proceed
- Then click the ‘Finish’ button to proceed and actual server installation will start
- After the database files are copied, click the OK button and exit
PL/SQL Developer Responsibilities
The role of a PL/SQL developer encompasses the following activities:
- Writing triggers, advanced PL/SQL communications with Oracle and Oracle stored procedures.
- Coordinate with DBA in fabricating and managing indexes, tables, table spaces, auditing and data quality checks.
- Design various structures for all physical objects and suggest changes on applications through efficient statistical structures.
- Creating and managing tables, indexes, db links and privileges.
Check out DBA interview questions. Also read SQL Query interview questions with detailed answers along.
PL/SQL FAQs
Q. What is PL/SQL used for?
Q. What is the requirement to install PL/SQL?
Q. What is difference between SQL and PL/SQL?
Q. Are PL SQL and Oracle same?
Q. What is trigger in PL/SQL?
Q. What are the responsibilities that fall under PL/SQL Developer?
- Writing triggers, and advanced PL/SQL communications with Oracle and Oracle stored procedures.
- Coordinate with DBA in fabricating and managing indexes, tables, tablespaces, auditing, and data quality checks.
- Design various structures for all physical objects and suggest changes on applications through efficient statistical structures.
- Creating and managing tables, indexes, db links and privileges.
Q. What are the advantages of PL/SQL?
Q. What are the disadvantages of PL/SQL?
- It uses high memory for storage.
- Roles of front-end developer and back-end developer cannot be fully separated.
- Complex and inconsistent syntax
- Lacks debugging functionality.
- Tough to detach PL/SQL development with HTML development.
Q. What are the skills needed for PL/SQL Developer?
Q. Which are the top colleges for PL/SQL training?
Popular PL/SQL Colleges in India
Popular Private PL/SQL Colleges in India
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