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Difference Between SQL and PL SQL

Definition of SQL and PL SQL

SQL is a shorthand in the form of Structured Query Language, and it is a common language that is used to manage relational databases. SQL lets users create or modify relational databases by using an array of standard commands.

PL SQL stands for Procedural Language/Structured SQL Language. it is a custom programming language created by Oracle. This is an expansion of SQL that lets users write procedural statements as well as control structures inside SQL statements. The language can be used to create stored procedure, function and triggers, among others which are employed to automatize database tasks and enhance the performance of databases.

The importance of knowing the difference in SQL as well as PL SQL

Knowing the distinction in SQL or PL SQL is important because they are two languages that have different purposes and capabilities. Although they both SQL as well as PL SQL are used for managing databases, they each have distinct applications and features that allow them to be used for different purposes.

Knowing the difference between these two languages will assist you in choosing the most appropriate language for your specific job which will result in better and more efficient management of your database. It will aid in optimizing data performance, increase security, and lower the chance of bugs and errors.

Furthermore, a lot of jobs in the area of database management including the database administrator, developer and analysts need to be proficient in both SQL as well as PL SQL. Understanding the distinctions of these two terms will improve your chances of a successful career and allow you to succeed in this area.

What is SQL?

SQL (Structured query language) is a common programming language for managing as well as manipulating databases that are relational. SQL is used to build or modify databases. It has evolved into the most commonly used language for working using structured information. It is a standard method to communicate with databases regardless of the database management system used.

SQL is a plethora of commands that can be utilized to extract data from databases, add fresh data in databases, modify or delete data, as well as manage databases structures like views, tables and indexes. SQL is a declarative language. That means that users can specify the information they wish to access or alter while it is the system that manages databases decides what actions to take in response.

SQL is utilized in a myriad of applications, such as the development of websites, analysis of data as well as business intelligence. Its widespread popularity and accessibility makes it a must-know ability for anyone who works using databases and data generally.

What is PL SQL?

PL SQL (Procedural Language/Structured Query Language) is an extension of SQL which was created in conjunction with Oracle Corporation. The language is procedural programming language that adds control variables, structures as well as other elements of a programming language to SQL.

PL SQL is used for creating stored procedures as well as triggers, functions as well as various other databases objects which are employed to automate processes and enhance the performance of databases.

PL SQL is closely integrated into Oracle’s database management system and has many advantage over SQL for specific tasks. For instance, PL SQL allows users to write code that can be reused, increase the performance of databases in reducing the amount of network activity and guarantee consistency of data by enforcing corporate guidelines and validating.

PL SQL supports features such as loops, conditional statements subprograms for handling exceptions and other features that allow you to create complex and advanced database-related applications. It can also communicate with other programs, which allows integration with different systems and applications.

PL SQL is widely used extensively in Oracle databases. It is a crucial ability for anyone who works in Oracle databases or other applications.

Difference Between SQL and PL SQL

SQL as well as PL SQL are both used for managing relational databases but they differ in capabilities and uses. Below are the major distinctions in SQL as well as PL SQL:

  1. Syntax SQL is a declarative dialect that employs an array of standard commands to manipulate databases and manipulate data and databases. PL SQL is a procedural language that makes use of programming concepts like variable variables, control structures and subprograms in order to construct database objects.
  2. Application SQL usually utilized for querying and manipulating data, while PL SQL is used for creating and managing database objects like stored procedures, function and triggers.
  3. performance: SQL is optimized to retrieve and manipulate large quantities of data. PL SQL is designed to be optimized to perform complicated operations on databases, like transaction management and validation of data.
  4. Security SQL could be susceptible to SQL injection attacks, which could cause security issues for databases, however PL SQL has greater security features including authentication and encryption, which help secure databases from attacks that are malicious.
  5. Utilizability SQL can be a breeze to learn and to use and can be utilized by people who are not programming however PL SQL requires programming skills and knowledge, making it more appropriate for advanced users and developers.

SQL is mostly used to manipulate and query data, whereas PL SQL is used for creating and managing database objects, as well as performing complex database operations. SQL is a breeze to learn and use, while PL SQL requires programming skills and experience.

What is the best time to utilize SQL instead of. PL SQL

Understanding the appropriate time to use SQL instead of. PL SQL is important to maximize the efficiency and performance of the database management tasks. Here are a few instances of scenarios where SQL is more appropriate or PL SQL is more appropriate:

When to use SQL:

  • Simple data retrieval and queries that don’t require complicated computations or any programming.
  • For tasks that require basic manipulation of data including adding, updating, or the deletion of records.
  • To perform tasks that require creating reports or showing data on user interfaces.
  • To perform tasks that require access to data from multiple tables or databases.

When to use PL SQL:

  • For complicated calculations and operations that require several steps and require programming logic.
  • For tasks which require transaction management and data validation, for example, applying business rules and restrictions.
  • To automate tasks that require processes for managing databases for example, creating triggers and stored procedures.
  • Tasks that require control of the flow of programs, like loops or conditional statement.

SQL is suited to tasks that involve merely information retrieval as well as manipulation while PL SQL is more suitable for jobs that require complicated calculations, validation of data and automated processes. But, the decision of SQL or PL SQL ultimately depends on the requirements and goals of the job to be completed.


SQL along with PL SQL are both important languages to manage relational databases. SQL can be described as a declarative programming language that is used to query and manipulate data, whereas PL SQL is a procedural language for creating databases, managing them as well as performing complex operations on databases. Knowing the distinctions between the two languages is crucial to improving the efficiency and performance of the database management tasks.

Understanding the right time to use SQL and PL SQL can help you determine the best software for your specific job which will result in an efficient and efficient database management and improving your chances of advancing for the profession of management of databases.