Prepare for SQL Fundamentals Certification with 350+ High-Quality Questions That Simulate the Real Exam Experience!
SQL Fundamentals - Certification | 350+ Practice Questions
Master SQL with Comprehensive Practice Questions!
Are you preparing for an SQL interview or looking to strengthen your database skills? This extensive collection of 350+ SQL questions is designed to help you build confidence, improve problem-solving abilities, and tackle SQL challenges effectively. Whether you're a beginner or an experienced professional, this practice set covers essential SQL topics with clear, well-structured explanations.
What’s Inside This Practice Test?
350+ Carefully Curated Questions – Covering everything from SQL basics to advanced techniques.
Detailed Explanations – Every question includes thorough answers to help you understand the logic behind SQL queries.
Real-World Scenarios – Around 40-45% of questions focus on practical applications, helping you prepare for real challenges in the workplace.
Updated Questions – Covers the latest SQL concepts, ensuring you're prepared for modern SQL interviews.
What Topics Are Covered?
1. SQL Basics & Introduction
What is SQL?
Importance of SQL
SQL vs NoSQL
2. Database Essentials
Understanding Databases & Tables
Relational Database Concepts
Primary Keys & Foreign Keys
3. SQL Data Types
String Data Types (VARCHAR, CHAR, TEXT)
Numeric Data Types (INT, FLOAT, DECIMAL)
Date & Time Data Types (DATE, TIME, TIMESTAMP)
4. SQL Commands
DDL (CREATE, ALTER, DROP, TRUNCATE)
DML (SELECT, INSERT, UPDATE, DELETE)
DCL (GRANT, REVOKE)
TCL (COMMIT, ROLLBACK, SAVEPOINT)
5. Querying Data with SELECT
Basic SELECT Statements
Filtering with WHERE
Sorting with ORDER BY
Using LIMIT & OFFSET
6. Filtering & Operators
Comparison Operators (=, !=, <, >, <=, >=)
Logical Operators (AND, OR, NOT)
Wildcards & Pattern Matching (LIKE, %, _)
IN, BETWEEN, IS NULL
7. SQL Functions
Aggregate Functions (COUNT, SUM, AVG, MAX, MIN)
String Functions (UPPER, LOWER, CONCAT, SUBSTRING)
Date Functions (NOW, DATE_FORMAT, DATEDIFF)
Mathematical Functions (ROUND, CEIL, FLOOR)
8. SQL Joins & Relationships
INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
Self Join & Cross Join
9. Grouping Data
GROUP BY Clause
Difference Between HAVING & WHERE
10. Subqueries & Nested Queries
Subqueries in SELECT & WHERE Clauses
Correlated Subqueries
11. Views & Indexes
Creating & Managing Views
Indexing for Performance Optimization
12. SQL Constraints
NOT NULL, UNIQUE, DEFAULT, CHECK
PRIMARY KEY, FOREIGN KEY
13. Transactions & ACID Properties
COMMIT, ROLLBACK, SAVEPOINT
14. Stored Procedures & Functions
Creating & Using Stored Procedures
User-Defined Functions
15. Triggers in SQL
What Are Triggers?
Creating & Managing Triggers
16. SQL Performance Optimization
Indexing Strategies
Query Optimization Techniques
Execution Plans
17. Advanced SQL Concepts
Common Table Expressions (CTEs)
Recursive Queries
Window Functions (ROW_NUMBER(), RANK(), DENSE_RANK(), LEAD(), LAG())
18. SQL vs NoSQL
Differences & Use Cases
When to Use SQL vs NoSQL
19. SQL in Real-World Applications
SQL for Data Analytics & BI Tools
Connecting SQL with Python, Java, etc.
Why Choose This SQL Practice Set?
Created for All Levels – Whether you’re a beginner or an expert, these questions will help you sharpen your SQL skills.Comprehensive & Practical – A perfect mix of theoretical and real-world questions to ensure complete preparation.
Interview-Focused – Prepare for technical SQL interviews with confidence.
Start Practicing Today & Take Your SQL Skills to the Next Level!
Who this course is for:
- Anyone who wants to improve their test-taking skills can benefit from practice tests, helping them try different strategies and get better at managing time for SQL Fundamentals.
- Individuals looking for a job can use practice tests to improve their SQL skills and knowledge, helping them stand out in the job market with SQL Fundamentals.
- Those who feel unsure about their abilities can use practice tests to build confidence by getting familiar with the exam format and preparing well for SQL Fundamentals.
- Students who want to do well in their exams can use practice tests to better understand SQL concepts and improve their results for SQL Fundamentals.
- Individuals getting ready for job interviews can use practice tests to learn common SQL-related questions and scenarios, helping them feel more prepared and confident for SQL Fundamentals.
- IT professionals looking to transition into database management can take practice tests to strengthen their SQL expertise for SQL Fundamentals.
- Freelancers and consultants offering database solutions can benefit from SQL Fundamentals practice tests to showcase their expertise.
- Anyone looking to transition into a data-related role can use SQL Fundamentals practice tests to develop essential database querying skills.