Specialization Track

Database Interview Questions & Answers

Database Technical Interview Questions

Easy 0 views

How do a primary key, foreign key, and unique constraint serve different purposes?

A primary key identifies each row and is non-NULL. A foreign key enforces an allowed relationship to a referenced key, helping prevent orphaned data. A unique constraint prevents duplicate combination...

Verified Model Solution View Full Answer

Easy 0 views

What is normalization, and when might denormalization be justified?

Normalization organizes relational data to reduce unnecessary duplication and update anomalies. For example, storing a customer’s address once avoids inconsistent edits across many order rows when the...

Verified Model Solution View Full Answer

Other Categories

Software Engineering & OOP 8 AI & Machine Learning 12 Data Structures & Algorithms 11 IT Staffing & Recruitment 9 JavaScript & Web Technologies 7 Cybersecurity & InfoSec 7 Python Programming 13 Data Science & Analytics 6 Java 18 Full Stack Web Development 13 SQL & Relational Databases 12 Computer Networks & OS 13 Cloud & DevOps Engineering 6 HR Interview 14 Data Science & Machine Learning 6 General 21 .NET 12 C++ and C 18 Networking 11 Windows 11 Unix / Linux 17 Visual Basic 8 Hardware 13 Database 9 Testing 19 Web Development 12 x86 13 Designing 6 Programming 2 Marketing 1 BPO 3 Customer Support 0 Technical Support 1 CCNA 3 Aptitude 1 FAQ 19 Engineering 3 Manufacturing 2 Backend 0

Practice Placement MCQs

Test your aptitude, quantitative reasoning, and core programming skills under timed conditions.

Start Placement Test