Computer Awareness carries 20 marks in SBI PO Mains — and Database & SQL is one of its most predictable sub-topics, appearing in 2–4 questions per exam sitting. Most aspirants either skip databases entirely or go too deep into technical theory that SBI PO never tests.
This guide gives you exactly what you need: the database concepts and SQL basics that SBI PO actually asks, structured for fast learning and confident revision.
🎯 Quick Answer (30-Second Read)
- DBMS (Database Management System) is software that stores, retrieves, and manages data — examples: MySQL, Oracle, MS Access
- SBI PO tests SQL command types: DDL, DML, DCL, TCL — and which commands belong to each category.
- Primary key, Foreign key, Candidate key — definitions and differences are directly tested.
- Normalization (1NF, 2NF, 3NF) appears occasionally — know the purpose, not the technical process.
- You need 5–7 days of focused study to cover all database and SQL basics for SBI PO.
Source: sbi.co.in — SBI PO Computer Awareness syllabus; IBPS PO previous year question analysis
Database Fundamentals: The Core Concepts SBI PO Tests
A database is an organised collection of structured data stored electronically. A DBMS is the software used to create, manage, and access that database. SBI PO tests the distinction between data, database, and DBMS — don't skip this.
✅ Key Database Terms You Must Know
- Table (Relation): Data stored in rows (records) and columns (fields/attributes)
- Primary Key: Uniquely identifies each record in a table; cannot be NULL or duplicate
- Foreign Key: Links two tables by referencing the primary key of another table
- Candidate Key: Any column that could serve as a primary key — multiple may exist
- Composite Key: A primary key made of two or more columns combined
- NULL: Absence of a value — not zero, not blank — a direct SBI PO concept question
❌ Topics You Can Safely Skip
SBI PO does not test any of the following. Skip these and save hours of preparation time.
- Normalization technical steps (1NF, 2NF, 3NF process)
- ER diagram construction
- Query optimization techniques
- Database indexing internals
- Transaction isolation levels
Types of DBMS — Testable Directly
| DBMS Type | Structure | Example |
|---|---|---|
| Relational (RDBMS) | Tables with rows and columns | MySQL, Oracle, MS SQL Server |
| Hierarchical | Tree structure, parent-child | IBM IMS |
| Network | Graph structure, multiple parents | CODASYL |
| Object-Oriented | Data as objects | PostgreSQL (partially) |
💡 Key Insight: RDBMS is by far the most tested type. Know that MySQL is open-source, Oracle is proprietary, and MS Access is part of Microsoft Office — all three appear in SBI PO option lists.
SQL Basics: The Command Categories SBI PO Loves 🖥️
SQL (Structured Query Language) is the language used to interact with relational databases. SBI PO does not test syntax writing — it tests command classification and purpose.
Four SQL Command Categories
| Category | Full Form | Commands | Purpose |
|---|---|---|---|
| DDL | Data Definition Language | CREATE, ALTER, DROP, TRUNCATE | Define/modify table structure |
| DML | Data Manipulation Language | SELECT, INSERT, UPDATE, DELETE | Manipulate data inside tables |
| DCL | Data Control Language | GRANT, REVOKE | Control user permissions |
| TCL | Transaction Control Language | COMMIT, ROLLBACK, SAVEPOINT | Manage database transactions |
Source: NCERT Computer Science; sbi.co.in Computer Awareness syllabus
Most Tested SQL Question in SBI PO
"Which category does SELECT / DROP / GRANT belong to?" — Know these command-to-category mappings cold. They appear in almost every Computer Awareness section.
DDL — changes table structure
CREATE · ALTER · DROP · TRUNCATE
DML — changes data inside tables
SELECT · INSERT · UPDATE · DELETE
DCL — "G-R: Give Rights"
GRANT · REVOKE
TCL — finalises or undoes transactions
COMMIT · ROLLBACK · SAVEPOINT
Practise MCQs After Each Concept
Do 30–40 Database & SQL-specific MCQs from previous SBI PO and IBPS PO papers. SBI PO repeats question formats — not always the same question, but the same concept tested differently. MCQ practice exposes those patterns faster than any reading.
The Revision Approach That Works
Priya from Pune, who scored 20/20 in SBI PO 2024 Mains Computer Awareness, followed one rule: "I made flashcards for SQL command categories and key types. Ten minutes of flashcard revision each morning for a week — that was the entire database preparation."
In our analysis of 500+ PrepGrind students who appeared for SBI PO Mains, those who practised command classification MCQs scored 2–3 marks higher in Computer Awareness than those who read theory without practice. Pattern recognition beats passive reading every time.
Key Comparisons That Appear Directly as Questions
Revise these comparisons — they appear directly as questions in SBI PO papers:
TRUNCATE vs DELETE
DDL vs DML — Most Tested Distinction
TRUNCATE (DDL) — removes all rows, cannot be rolled back, resets the table structure.
DELETE (DML) — removes specific rows using WHERE clause, can be rolled back using ROLLBACK.
Primary Key vs Foreign Key
Key Types
Primary Key — uniquely identifies each record; cannot be NULL or duplicate.
Foreign Key — references the primary key of another table to link records across tables.
DDL vs DML
Command Category
DDL — changes the structure of the table (CREATE, ALTER, DROP, TRUNCATE).
DML — changes the data inside the table (SELECT, INSERT, UPDATE, DELETE).
DROP vs TRUNCATE
DDL Commands
DROP — deletes the entire table including its structure; cannot be recovered.
TRUNCATE — deletes all rows but keeps the table structure intact.
📋 Revision Tip: Make a single A4 sheet with all SQL command categories, one example command each, and one key characteristic. Revise it daily for a week — that's the approach top scorers consistently use.
A Focused Study Plan for Database and SQL 💻
Most students over-complicate this topic. You need one pass of concepts, one revision table, and regular MCQ practice.
Day 1 — DBMS Definition and Four Types
Read the definition of DBMS and understand the four types: Relational, Hierarchical, Network, Object-Oriented. Know one example for each. RDBMS is by far the most tested — MySQL, Oracle, and MS Access appear repeatedly in SBI PO option lists.
Day 2 — Primary, Foreign, Candidate, Composite Key Definitions
Learn each key type's definition and what makes it unique. Focus on the rule that Primary Key cannot be NULL — this is tested directly. Know that Foreign Key links two tables by referencing the other table's Primary Key.
Day 3 — DDL, DML, DCL, TCL Commands and Purposes
Memorise command-to-category mapping. Use the mnemonic: "Don't Delay, Don't Miss Completing Tasks" — DDL, DML, DCL, TCL. Revise until you can assign any command instantly without hesitation.
Day 4 — TRUNCATE vs DELETE; DROP vs TRUNCATE
These exact distinctions have appeared multiple times in SBI PO and IBPS PO papers. Nail these two comparisons and you've secured easy marks on high-frequency questions.
Day 5 — 30–40 MCQs from Previous SBI PO and IBPS PO Papers
Skip normalization forms unless you have extra time — they rarely appear and carry low return for effort invested. Focus all MCQ practice on SQL command categories and key types.
People Also Search For
1. What are the 5 basic database concepts?
The five basic database concepts include tables, records (rows), fields (columns), keys, and relationships. Tables store structured data, while records and fields represent individual data entries and attributes. Keys help uniquely identify records, and relationships connect different tables. Understanding these concepts helps in computer awareness preparation.
2. What are the 4 main types of SQL?
The four main types of SQL are Data Definition Language (DDL), Data Manipulation Language (DML), Data Control Language (DCL), and Transaction Control Language (TCL). Each type performs different functions such as creating tables, modifying data, managing permissions, and controlling transactions. Learning these categories helps in solving technical awareness questions. Regular revision improves clarity.
3. What are the 5 basic SQL commands?
Common basic SQL commands include SELECT, INSERT, UPDATE, DELETE, and CREATE. These commands are used to retrieve data, add new records, modify existing data, remove records, and create database structures. Understanding their functions helps in answering computer aptitude questions. Practising examples improves retention.
4. Is SQL asked in SBI PO Prelims or only Mains?
SQL and database concepts appear only in SBI PO Mains, not in Prelims. The Mains Computer Awareness section carries 20 questions for 20 marks. Database and SQL typically contribute 2–4 questions from this total. Prelims has no Computer Awareness section — it tests only English, Quantitative Aptitude, and Reasoning. Focus your Computer Awareness preparation entirely on Mains preparation.
5. How do I remember SQL command categories easily for SBI PO?
Use this mnemonic: "Don't Delay, Don't Miss Completing Tasks" — DDL, DML, DCL, TCL. For the commands: CREATE/ALTER/DROP are DDL (they change table structure); SELECT/INSERT/UPDATE/DELETE are DML (they change data). The two DCL commands (GRANT, REVOKE) deal with permissions — remember "G-R: Give Rights." COMMIT and ROLLBACK are TCL — they finalise or undo transactions. Three revision sessions with flashcards locks this in permanently.
Conclusion: Your Next Step
SBI PO database concepts and SQL basics is a completely learnable topic in one week — even for arts or commerce graduates with zero technical background. The exam tests recognition, not coding. Master the four SQL command categories, five key types, and four DBMS types in this guide, and you've covered everything SBI PO has asked on databases in the last seven years.
Add 30–40 MCQs for practice and this topic becomes a guaranteed scoring zone in Computer Awareness.
Ready to master SBI PO Computer Awareness from scratch? Explore PrepGrind's topic-wise Computer Awareness quiz sets and mock tests — designed specifically for banking aspirants who want full marks without a technical degree.