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SpringBoot Model
(JPA and Hibernate)
Introduction to ORM, Hibernate and JPA
Learning Outcome
6
key annotations like @Entity, @Id, @JoinColumn
5
Implement entity relationships
4
Write custom query methods
3
CRUD operations using JPA
2
Create Entities and Repositories
1
Understand ORM, Hibernate, and JPA basics
Topic Name-Recall(Slide3)
Imagine a warehouse where workers must record everything manually.
Every time a package arrives, workers must write down its details in a large register.
To find a package later, they must search through pages of records one by one.
For every new package, they must repeat the same recording process again and again.
If the warehouse layout changes, all records must be updated manually.
It was very hectic and time-consuming, making the entire process inefficient and difficult to manage.
Similarly, before ORM, developers had to:
Write large amounts of JDBC code.
Write manual SQL queries.
Repeat boilerplate code for every database task.
Manage database connections manually.
What is ORM?
Bridges the Gap
Removes the mismatch between Java objects and database tables
Object Relational Mapping
A technique that converts data between object-oriented systems and relational databases
Java Classes ↔ Database Tables
Automated Data Conversion
Simplified Database Operations
Key Benefits
Before vs After ORM
JPA is a Java specification used to interact with databases using ORM.
Java Persistence API
What is JPA?
Core Components of JPA
Hibernate, Spring Data & Spring Data JPA
How they work together
Spring Data JPA
JPA (API/Spec)
Hibernate (JPA Provider)
ORM (Concept of object <-->table mapping)
Uses
Implemeted by
Does
Core Concepts (Slide 7)
Core Concepts (.....Slide N-3)
Summary
5
Spring Data JPA simplifies database CRUD operations.
4
Hibernate implements JPA for database operations.
3
JPA defines rules for ORM implementations.
2
ORM reduces JDBC code and manual SQL.
1
ORM maps Java objects to database tables.
Quiz
What is the main purpose of ORM?
A. Designing UI
B. Connecting Java objects with database tables
C. Writing HTML code
D. Managing networks
What is the main purpose of ORM?
A. Designing UI
B. Connecting Java objects with database tables
C. Writing HTML code
D. Managing networks
Quiz-Answer
SpringBoot - Introduction to ORM, Hibernate and JPA
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