Presentation about ORM for beginners

1. Object Relational Mapping
by
Abhilash M A

2. What is ORM?
● Relational Database
● Objects
● Mapping between Objects & Relational
Database

3. Why ORM?
● Leverages existing knowledge and skills
related to OOP
● Level of abstraction
● Saves programmer time

4. CRUD
1. Create
○ User.create(:name => ‘asd’, :email => ‘asd@wer.com’)
2. Read
○ @user = User.find(1)
3. Update
○ @user.name = ‘new name’
○ @user.save
4. Delete
○ @user.delete

5. Associations
1. One to One

6. Associations
1. One to One

7. Associations
2. One to Many

8. Associations
3. Many to Many

10. ORM Frameworks
1. Ruby on Rails
○ ActiveRecord
2. Java
○ Hibernate
3. .NET
○ LINQ
○ Entity Framework
4. PHP
○ CodeIgniter
○ CakePHP
5. iOS
○ CoreData

11. Thank You :)