Hibernate & JPA

JPA vs Hibernate

EntityManager & Persistence Context

Entity Lifecycle States

@Entity, @Table, @Id

@GeneratedValue Strategies

@Column Mapping

@Embeddable & @Embedded

One-to-One Mapping

One-to-Many Mapping

Many-to-One Mapping

Many-to-Many Mapping

@JoinColumn & @JoinTable

Cascade Types

FetchType — EAGER vs LAZY

@MappedSuperclass

Inheritance — Single Table Strategy

Inheritance — Table per Class Strategy

Inheritance — Joined Strategy

JPQL Basics

JPQL Joins & Fetch Joins

Named Queries

Criteria API

Native SQL Queries

Spring Data JPA — JpaRepository

Query Methods by Method Name

@Query Annotation

Specifications & Predicates

Pagination & Sorting in Spring Data

N+1 Problem

Fetch Joins & the N+1 Problem

Entity Graphs

Second-Level Cache

Query Cache

Batch Inserts & Updates

Dirty Checking

Transactions in JPA

@Transactional Behaviour

Transaction Propagation

Optimistic Locking — @Version

Pessimistic Locking

@Auditing with Spring Data

Hibernate Validator (Bean Validation)

Schema Generation (hbm2ddl)

Custom AttributeConverter

Multi-Tenancy in Hibernate

Hibernate Envers (Entity Auditing)

Hibernate Statistics & Logging