Oracle Database PL/SQL Developer Certified Professional

Skills Required

To become an Oracle Database PL/SQL Developer Certified Professional, you must be acquainted with the following skills.

• Application Development: Application development is designing, building, and implementing software applications. Massive organizations can do it with large teams working on projects or a single freelance developer.
   
• Oracle Database: It is a multi-model database management system made and marketed by Oracle Corporation. It is a Database commonly used for online transaction processing, data warehousing, and mixed database workloads.
   
• PL/SQL: PL/SQL is procedural Sql, designed specifically to embrace SQL statements within its syntax. PL/SQL program units are compiled by the Oracle Database server and kept inside the database. Both PL/SQL and SQL run within the same server process at run-time, bringing optimal efficiency. PL/SQL automatically inherits the robustness, security, and portability of the Oracle Database.
   
• Programming: Computer programming is performing a particular computation, usually by designing and building an executable computer program. It involves analyzing algorithms, generating algorithms, profiling algorithms' accuracy & resource consumption, and implementing algorithms.
   
• Tuning: Performance tuning is optimizing Oracle performance by streamlining the execution of SQL statements. In other words, performance tuning simplifies accessing and altering the information contained by the database to improve query response times and application operations.
   

Preparation Strategy

An optional course at Oracal University goes like Earn the Oracle Database PL/SQL Developer Certified Professional Credential. 

Format: Multiple Choice

Duration: 90 Minutes

Exam Price: ₹18,447

Number of Questions: 6

Declaring PL/SQL Variables
Recognize the valid and invalid identifiers.	List and describe the various data types using the %TYPE & %ROWTYPE attributes.
List the uses of variables, declare & initialize variables, and use bind variables.

 

Writing Executable Statements
Determine lexical units in a PL/SQL block.	Write readable code with appropriate indentation.
Use built-in SQL functions in PL/SQL & sequences in PL/SQL expressions.	Express when implicit conversions occur and when explicit conversions have to be dealt with
Write nested blocks & qualify variables with labels.

 

Writing SQL in PL/SQL
Create PL/SQL executable blocks using DML & transaction control statements.	Use the INTO clause to hold the values returned by SQL statements.

 

Writing Control Structures
Specify the uses and types of control structures (IF, CASE statements, and expressions).	Construct & identify loop statements.
	Use EXIT and CONTINUE statements inside the loops.

 

Working with Composite Data Types
Create user-defined PL/SQL records.	Explain the differences among records, collections, and collections of records.
Create a record with the %ROWTYPE attribute.
Create an INDEX BY table and an INDEX BY table of records.	Initialize collections and records.

 

Using Explicit Cursors
Distinguish between implicit & explicit cursors and use SQL cursor attributes.	Declare and use cursors with the parameters.
Declare & control explicit cursors, use simple loops and cursor FOR loop to fetch data.	Lock rows with FOR UPDATE clause, and reference the current row with the WHERE CURRENT OF clause.

 

Handling Exceptions
Define PL/SQL exceptions.	Handle different kinds of exceptions (internally defined exceptions, predefined exceptions, and user-defined exceptions).
Recognize the unhandled exceptions.
Propagate exceptions.

 

Using PL/SQL Subprograms
Differentiate between anonymous blocks and subprograms.	Create a simple procedure & invoke it from an anonymous block.
Identify the benefits of subprograms.

 

Creating Procedures and Using Parameters
Create a procedure with parameters.	Use named notation.
Work with procedures (create, invoke & remove procedures).	Handle exceptions in procedures and depict a procedure's information.

 

Creating Functions
Differentiate between procedures and functions.	Work with functions (create, invoke & remove functions).
Describe the uses of functions.

 

Creating Packages
Identify the advantages and the components of packages.	Work with the packages (create package specification and body, invoke package subprograms, display package information, and remove a package).
Overload package subprograms and use forward declarations.

 

Working with Packages
Use package types and variables.	Use ACCESSIBLE BY to restrict access to package subprograms.
Use packaged constants and functions in SQL.

 

Using Dynamic SQL
Describe the execution flow of SQL statements.	Use Native Dynamic SQL (NDS).
	Bind PL/SQL types in SQL statements.

 

Design Considerations for PL/SQL Code
Create standard constants and exceptions.	Perform autonomous transactions.
Control the run-time privileges of a subprogram.	Use NOCOPY hint, PARALLEL ENABLE hint, and DETERMINISTIC clause.
Use bulk binding and the RETURNING clause with DML.
	Write and call local subprograms.

 

Creating Compound, DDL, and Event Database Triggers
Create triggers on the DDL statements.	Describe different types of triggers & their uses.
Create triggers on the system events.

 

Using the PL/SQL Compiler
Describe the PL/SQL compiler and features.	Use the PL/SQL compiler initialization parameters.
Use the PL/SQL compile-time warnings.

 

Managing PL/SQL Code
Describe and use the conditional compilation.	Whitelist code access with ACCESSIBLE BY clause.
Code-based access control: granting roles to program units.	Mark code as deprecated.

 

Managing Dependencies

Track and manage procedural dependencies.

 

Prerequisites

Pass this SQL Exam: Oracle Database 12c SQL 1Z0-071

Job Opportunities

After completing this certification, you could become an Oracle Database PL/SQL Developer Certified Professional, and many organizations would be interested in hiring you as a PL/SQL developer. The PL/SQL developer coordinates with DBA(Database Administrator) and is involved in creating and maintaining tables, privileges, and indexes.

Job Opportunities after this could be:

• PL/SQL Developer
• Analyst Role
• Unix Developer/Administrator
• Database Administrator
• PL/SQL Performance Optimization Developer
• SQL Developer
• PL/SQL Administrator
• ETL Developer
• Pro*c Developer
• Informatica Developer
• DB2 Professional
   

The estimated total base package for an Oracle PL/SQL Developer is around ₹7,17,707 per year in India and for a Senior SQL Developer is ₹10,22,663 per year.

The estimated salary for a beginner PL/SQL developer is given below:

Location	Estimated Salary
Noida, Uttar Pradesh	₹435,000 /yr
Telangana,	₹482,000 /yr
Bangalore, Karnataka	₹660,000 /yr

The salary figures mentioned above are subject to change.

Resources for Preparation

Confused where to start? 😕

Here’s Coding Ninjas to the rescue. Please go through our well-structured resources below, which will help you prepare for the certification and ace it like a ninja! 🐱‍👤

Introduction

• Introduction to DBMS
• DBMS vs. RDBMS and DBMS vs. file system
• DBMS Architecture
• Data Models
• DBMS Storage System
• Data Independence and ACID Properties
• Difference between OLTP and OLAP
• Database Design Tools

ER diagrams and Relational Models

• Entity-Relationship Diagram
• Relational Data Models
• Anomalies in Relational Model
• Dimensional Data Modeling
• Data Warehouse Modeling
• ER vs. Relational Model
• Relational Algebra
• Example on Relational Algebra
• Keys in DBMS
• Relationships in DBMS

Database Design and Normalisation

• Inference Rule in DBMS
• Need for Normalization
• First Normal Form (1NF)
• Example of Normalisation Conversions
• Fourth Normal Form

File Organisation

• Introduction to File Organization
• Hash File Organization
• B+ Tree File Organization

Indexing in Databases

• Indexing and its types
• Introduction to B-Tree
• Delete Operation in B-Tree
• Introduction to B+ Trees
• Comparison between B Tree and B+ Tree
• Bitmap Indexing

We also have articles containing popular questions from the overall syllabus, apart from these particular topics. We have given the links to those articles below.

• Top DBMS Interview Questions(2021)
• Fundamentals of Database Systems: DBMS Tutorial
• DBMS Interview Questions: Part 2
• DBMS Interview Questions: Part 1
   

Visit our Database Management System library and DBMS - Database Management Systems guided path to find all the resources in a structured form. 

You can also view our articles on Data Structures and Algorithms, Competitive Programming, Interview Questions, and Basics of Java with Data Structures and Algorithms.

Frequently Asked Questions

What Is Oracle SQL Developer?

Oracle SQL is a programming language that lets database users and administrators perform tasks and undertake projects with fewer clicks and keystrokes. It is a graphical user interface designed to help the user save time used during operations & maximize the return on investments in the Oracle Database technology stack. It runs on any operating system that supports Java and Oracle Database 10g, 11g, and 12g.

What is PL/ SQL?

PL/SQL is a block-structured language which allows developers to combine the power of SQL with procedural statements. It is a database-oriented programming language that expands the applications of SQL with procedural capabilities. PL/ SQL lets better performance and error handling and uses block structures that can be nested within each other.

An Oracle PL/ SQL Developer Certified Associate demonstrates expertise in building database-centric Internet applications for Oracle Database 11g and Oracle Database 10g. It also gets you one step closer to becoming an Oracle Forms Developer Certified Professional.

Why do we use PL/ SQL?

An Oracle Databases application can't work unless correct and complete data is used. The most efficient way to do this is by exposing the database only through an interface that hides the implementation details. It is called an intelligent database or smartDB paradigm because the data can be viewed and modified only through a PL/ SQL interface.

Who Should Get This Certification?

This certification path is aimed at:

• PL/ SQL Developers
• Database Administrators
• Forms Developers
• System Analysts
• Technical Consultants

Is PL/SQL a good career?

The PL/SQL is not growing but not going away either. Since it is used in the Oracle database, and the Oracle database is a fixture of enterprise systems worldwide, it will outlive you. High-performance batch processing has to happen close to the data, so PL/SQL will continue to lead in this area.

Conclusion

This article gives information about Oracle Database PL/SQL Developer Certified Professional. Being an Oracle Database PL/SQL Developer Certified Professional, you must be well-versed with the concepts you have learned.

Here are some of the blogs you must check out:

• Introduction to IT Certifications
• Why Certification is Important for IT Professionals?
• Introduction to Oracle Certifications
• Anomalies in database
   

Refer to our guided paths on Coding Ninjas Studio to learn more about DSA, Competitive Programming, JavaScript, System Design, etc. Enroll in our courses and refer to the mock test and problems available. Take a look at the interview experiences and interview bundle for placement preparations. Also, Check our CN Library for free online coding resources.

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Happy Learning Ninja!