Day 2 | DBMS Top 50 MCQs 🔥 | Relational Database Keys & Codd's Rules | BPSC TRE 4.0 | CTET | STET

Описание: Welcome to Day 2 of DBMS MCQ Practice Series 🎯

Continuing from Day 1, we dive deeper into Relational Database Concepts with Top 50 Most Important DBMS MCQs focused on Keys, Referential Integrity, and Codd's Rules. These questions are frequently asked and highly expected in upcoming teaching and competitive exams.

📚 Topics Covered (Top 50 MCQs):

Keys in Relational Database

Superkey Definition & Properties

Candidate Key Characteristics

Primary Key Constraints

Alternate Keys

Foreign Keys & References

Unique Keys vs Null Values

Referential Integrity

Referential Integrity Concept

CASCADE, RESTRICT, SET NULL Actions

Referenced Tables vs Referencing Tables

Integrity Constraint Violations

Foreign Key Relationships

Codd's 12 Rules for Relational Databases

Rule 0: The Foundation Rule

Rule 1: Information Rule

Rule 2: Guaranteed Access

Rule 3: Systematic Treatment of NULL

Rule 4: Dynamic Online Catalog

Rule 5: Comprehensive Data Sublanguage

Rule 6: View Updating Rule

Rule 7: High-Level Insert, Update, Delete

Rule 8: Physical Data Independence

Rule 9: Logical Data Independence

Rule 10: Integrity Independence

Rule 11: Distribution Independence

Rule 12: Non-Subversion Rule

Relational Database Concepts

Attributes & Domains

Relations & Tuples

Database Schemas

Abstraction Levels in Relational Model

Candidate Key Selection

Cardinality & Degree

🎯 Useful For Exams:
✔ BPSC TRE 4.0 (Computer Science)
✔ CTET / STET
✔ KVS / DSSSB
✔ UP LT Grade
✔ Other Computer Teacher & CS Exams
✔ Technical Interviews (DSA rounds)
✔ B.Tech/MCA Students

📌 This Top 50 MCQ set will strengthen your concept clarity on relational databases and boost your exam accuracy significantly.

💡 KEY HIGHLIGHTS:
✅ Clear explanations for each concept
✅ Real-world examples & scenarios
✅ Common exam mistakes highlighted
✅ Quick revision notes at the end
✅ Solution patterns for similar questions

🔗 Prerequisites:
👉 Watch Day 1: DBMS Top 50 MCQs for database fundamentals -    • Day 1 | DBMS Top 50 MCQs 🔥 | Database Basi...  

👉 Watch till the end for revision-oriented MCQs.
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