fundamentals/database

Notes

Name	.md	.pdf	Handwritten	MCQs	Worksheet	Worksheet with Answers
Database Fundamentals	1	2	3	4	_	_
Data Integrity & ER Diagrams	1	2	3	4	_	_
Data Normalisation and ACID	1	2	3	4	_	_
Transactions and Indexes	1	2	3	4	_	_
SQL Primer	1	2	3	4	5	6
SQL Joins and Aggregation	1	2	3	4	5	6
Subqueries and Functions	1	2	3	4	5	6

Assignments

ER Diagram

Download the ER diagram from here and import it into draw.io.

• Add the mentor entity
• Modify batch to add more attributes
• Add relationships between the mentor and batch entities. A mentor can be assigned to multiple batches and a batch can have multiple mentors.

Problem sets

1. Simple - I
2. Simple - II
3. Joins - I
4. Joins - II
5. Aggregation - I
6. Join - III
7. Aggregation - II
8. Aggregation - III
9. Subqueries - I
10. Subqueries - II
11. Dates - I

Bold problems were solved during the session.

RDBMS

• MySQL
• PostgreSQL
• SQLite

SQL clients

• TablePlus
• MySQL Workbench

Online Playgrounds

• SQL Fiddle

Links

• Awesome database learning
• SQL Cheat Sheet