Databases

Databases, JDBC & Hibernate (JPA)

This section focuses on mastering relational database concepts, SQL, Java Database Connectivity (JDBC), ORM fundamentals, and Hibernate/JPA. Each topic includes theoretical explanations and practical coding use cases that form the backbone of backend development.

How to Use This Section

• Each topic should be turned into its own subdirectory with markdown explanations and code samples.

• SQL examples, JDBC programs, and Hibernate entity mappings should be stored in the codes/ folder.

• Each markdown file should provide clear explanations, diagrams, and code snippets to illustrate key concepts.

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Topics Covered

1. Java Database Connectivity (JDBC)

• Introduction to JDBC

• JDBC Architecture

• Steps to Connect to a Database using JDBC

• JDBC Methods Overview

• JDBC Code Demonstrations ⭐️

2. PostgreSQL Database

• Introduction to PostgreSQL

• PostgreSQL Cheatsheet

3. Hibernate

• Introduction to Hibernate

• Complete Hibernate Saving Workflow

• Code Demonstrations for Hibernate ⭐️

• Hibernate Annotations

• Mapping Relationships in Hibernate

• Hibernate Caching Mechanism

• Hibernate Query Language (HQL) ⭐️

• The N+1 Select Problem in Hibernate

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Contribution

If you find any issues or have suggestions for improvement, please feel free to open an issue or submit a pull request. Your contributions are welcome!

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