The Complete PostgreSQL Practice Course: 300 MCQs (Hands-On)

The Complete PostgreSQL Practice Course: 300 MCQs (Hands-On) udemy course free download

Hands-On Practice for Mastering PostgreSQL Database Skills Across All Levels - Solve 300 MCQs - Real World Scenarios

This comprehensive PostgreSQL course is designed to guide learners through every stage of mastering PostgreSQL, from foundational concepts to advanced real-world applications. Featuring a total of 300 carefully crafted multiple-choice questions (MCQs), the course is structured across six practice tests, each targeting different skill levels—beginner, intermediate, and advanced.

Through a hands-on approach, learners will develop a deep understanding of PostgreSQL’s core functionalities, including database creation, table design, data manipulation, querying, and complex join operations. The course extensively covers essential SQL commands, aggregate functions, conditional logic, and advanced topics such as stored procedures, triggers, transactions, and performance optimization.

Key topics covered in this course include:

• Database and Table Management: Create a database, create tables with relevant columns, alter tables, drop tables, and use constraints such as primary key, foreign key, and auto increment.

• Data Manipulation: Insert data, including insert-select statements, and manage data efficiently.

• Basic and Advanced Querying:

  • Select queries with WHERE clause, including logical operators AND, OR, NOT

  • Sorting results using ORDER BY, limiting output with LIMIT and OFFSET

  • Filtering unique values with DISTINCT

  • Using aggregate functions such as MIN, MAX, COUNT, AVG, SUM

  • Pattern matching with LIKE and ILIKE

  • Range filtering using BETWEEN and membership testing using IN

• Join Operations:

  • INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN, CROSS JOIN, and Self JOIN

  • Joins combined with aggregates and joining multiple tables for complex queries

• Grouping and Filtering Groups: GROUP BY and HAVING clause for summarizing data

• Set Operations and Subqueries: UNION, EXISTS, and advanced CASE statements for conditional logic

• Handling NULLs and Data Functions: Techniques for managing NULL values, using COALESCE, and casting data types

• String and Numeric Functions: LENGTH, CONCAT, SUBSTRING, UPPER, LOWER, ABS, ROUND, MOD, RANDOM

• Date and Time Functions: CURRENT_DATE, AGE, DATE_ADD using INTERVAL, TO_CHAR for formatting

• Indexes and Performance: Creating indexes to improve query performance

• Views: Creating and managing views for simplified data access

• Advanced Database Objects and Features: Stored procedures, triggers, and transactions ensuring data integrity and automation

• E-Commerce Database Scenarios: Real-world examples and challenges related to e-commerce domain

• Transaction Management and ACID Properties: Understanding and implementing transactions for data consistency and reliability

Each practice test is designed to not only assess knowledge but also reinforce learning by providing real-life scenarios and detailed explanations, ensuring practical readiness for database management, development, and interview preparation. Whether you are new to PostgreSQL or looking to enhance your expertise for professional growth, this course offers a structured pathway to build confidence and proficiency in managing PostgreSQL databases effectively.

By the end of this course, learners will be equipped to write efficient SQL queries, implement robust database designs, troubleshoot complex scenarios, and optimize PostgreSQL performance, making them ready to tackle real-world challenges in various domains.