Hire the Best Oracle PL/SQL Developer for Your Organization

What Is PL/SQL?

PL/SQL (also known as procedural language extension to the Structured Query Language) is primarily a block-structured, procedural language. In the early 1990s, it was developed by Oracle Corporation. Oracle uses PL/SQL besides the other two languages, SQL and Java. Being an extension of SQL, it embeds the SQL queries in its syntax. PL/SQL also provides several iteration constructs to the SQL to overcome some constraints of SQL Language. It provides a holistic programming language solution for developing crucial applications on Oracle Databases. 

It is a well-structured and easily comprehensible language. Its construct is sufficient to express the intention in the code clearly. Besides, PL/SQL is one of the easiest languages to learn. The language is aimed at combining procedural programming language and database language.

PL/SQL is a portable language for Oracle Database development. It’s easy to run PL/SQL apps on any OS and platform where Oracle Database has been deployed. Being an embedded language, it is only executable in an Oracle Database. It was not intended to be used as a standalone language. PL/SQL is a highly productive database language that lets you develop procedural/modular programs in Oracle Database.

Is PL different from SQL?

  • The main difference between two languages is that PL/SQL allows the block of code to be executed at once, whereas the SQL works on a single query at a time.
  • PL/SQL is the Procedural Language for SQL, whereas the SQL stands for Structured Query Language.
  • SQL queries find their use in retrieving data from the database, whereas PL/SQ is utilized to create applications that display the data retrieved by SQL.
  • PL/SQL enables you to write the programming block, which includes functions,  triggers, procedures,  variables, and packages within its syntax. However, SQL queries and commands needed to be written in DML (Data Manipulation Language) and  DDL (Data Definition Language). 

What are the skills required for PL/SQL Developers?

  • Expertise in the Oracle database and tools
  • Understanding of PL/SQL triggers and packages
  • Knowledge of data modeling, data analysis, design and implementation
  • Awareness of the design and implementation of  ETL approach via ORACLE built-in functions

About Oracle PL/SQL Online Test

The Oracle PL/SQL test assesses aspirants' knowledge of PL/SQL statements, specific PL/SQL features, and relational database concepts. The purpose of this online test is to evaluate the knowledge and skills of candidates. A PL/SQL test is useful for pre-employment screening because it enables recruiters to make the right hiring decisions. A proficient backend developer/database admin working with the SQL Server database requires proper knowledge of PL/SQL. Test takers are required to take the PL/SQL assessment test before the second-round interviews. This test consists of a random set of multiple-choice questions about PL/ SQL. 

The PL/SQL assessment test is useful for evaluating the below-mentioned relevant skills:

  • Working knowledge of SQL 
  • Proficiency in .NET frameworks
  • In-depth understanding of SQL design skills
  • Knowledge of RDBMS concepts and database modeling

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Why should you use Mercer|Mettl’s PL/SQL Skill Test?

PL/ SQL Online test enables tech recruiters to assess candidates’ expertise in Procedural Language for SQL.  The Mettl’s test development team works closely with subject matter experts (SME) to create specialized PL/SQL tests as per the industry standards. The tests are designed in such a way that they provide some valuable insights into the candidate’s level of expertise.

Mettl’s PL/SQL assessment tests are used during the recruitment process to learn more about the technical skills of candidates. PL/SQL exams can be quite useful when trying to evaluate specific technical skills and job readiness of potential candidates. This test consists of 40 multiple choice questions to be answered in 60 minutes.

Key profiles the test is useful for:

  • Oracle PL/SQL Developer
  • Oracle Developer
Number of Questions 40
Test Duration 60 Minutes
Test Language English

Section-wise details:

Number of MCQ questions based on Application Security - DBMS_CRYPTO 1
Number of MCQ questions based on Character Number and Miscellaneous Functions 2
Number of MCQ questions based on Control Structure 3
Number of MCQ questions based on Cursor 1
Number of MCQ questions based on Datatypes and Data Dictionary 2
Number of MCQ questions based on Date and Conversion Functions 2
Number of MCQ questions based on Exception Handling 2
Number of MCQ questions based on Functions 2
Number of MCQ questions based on Joins Views Indexes and Sequences 3
Number of MCQ questions based on Materialized view 2
Number of MCQ questions based on Optimization Techniques 2
Number of MCQ questions based on Performance Tuning 3
Number of MCQ questions based on Queries and Sub Queries 3
Number of MCQ questions based on Query Optimization 3
Number of MCQ questions based on Stored Procedure 1
Number of MCQ questions based on Subprograms and Packages 2
Number of MCQ questions based on Triggers 2
Number of MCQ questions based on Use of Static and Dynamic PL SQL 2
Number of MCQ questions based on XMLs DBMS XML and XMLTYPE 2

Candidates with work experience of 2-4 years are eligible to take the test.

Difficulty level: Moderate


Answer to common queries:

Q. Can candidates be benchmarked based on the internal sample set?
A. Yes, at Mettl, it can be done. Should you need any further information, please write to us, and we will be happy to assist you.

Q. Is it possible to customize the report as per the need?
A. Yes, we can do it. We have already done it in the past for our clients. Should you need any further information, please write to us, and we will be happy to find the best solution for you.

Q. How do students practice PL/SQL effectively online?
A. Oracle Live SQL is one of the most sought-after platforms to develop PL/SQL skills. It’s a cloud-based service that enables students to learn and practice key concepts in Oracle databases using Structured Query Language (SQL) and PL/SQL. Also, candidates can share their scripts and access Code library, which includes a plethora of useful scripts for practice.

Q. Is PL/SQL difficult to learn?
A. Learning PL/SQL is not as complicated as it seems, but candidates should possess a good understanding of SQL. There are various kinds of short term courses available online, and it may take a month or two to gain expertise if students take it religiously. However, it’s an exciting subject to learn. 
Some PL/SQL topics are listed below:

  • Variable Declaration
  • Writing PL/SQL Executable Statements 
  • Control Structures
  • Interacting with Oracle Database 
  • Composite Data Types
  • Explicit Cursor
  • Exception Handling
  • Advanced Cursors
  • Create Procedures
  • PL/SQL Subprograms
  • Functions in PL/SQL
  • Oracle Supplied Packages
  • PL/SQL Package Concepts
  • Oracle PL/SQL Trigger Concepts

Q.What are the most common interview questions?
A. Listed below are the most common PL/SQL interview questions that’ll help you prepare for an interview:

  • What’s the difference between SQL and PL/SQL?
  • What is PL/SQL?
  • Explain the basic structure of PL/SQL?
  • How is the process of PL/ SQL compiled? 
  • What are the advantages of PL/SQL packages?
  • What is the package in PL SQL?
  • What are the uses of a database trigger?
  • How do you differentiate between functions, procedures, and packages in PL/SQL?
  • How would you trace the PL/SQL code?

How it works:

step 1
Mettl-PBT-1

Add this test to your tests

step 2
Mettl-PBT-2

Share test link from your tests

step 3
Mettl-PBT-3

Candidate take the tests

step 4
Mettl-PBT-4

You get their tests report


Note You will be charged only at step 3. i.e. only when candidate start the test.


Relevant for Industries

  • IT
  • ITeS

Related Tags

Databases