Mon

1. MongoDB
in
Developer Perspective
@roofimon
Scrum Master@Opendream™

2. Agenda
• The Myth of Persistence
• How MongoDB Solve the Problems?
• Polyglot Persistence

3. Set up Conversation
Strongly believe in Object Oriented
Programming
Strongly believe in Agile Development
Methodology

4. The Myth of RDBMS
• Object Relational Impedance mismatch
• Schema Evolution
• Sparse Table

5. These brought me to
the Problem of RDBMS

6. Object Relational
Impedance Mismatch

7. • Object Relational Mapping Costs Time And Money
• Relational Database Table Rows Have No Intrinsic
Object Identity
• Mapping Inheritance Hierarchies To Relational
Schemata Involves Compromises
• Foreign Keys Can Only Reference One Table
• Object Relational Impedance Mismatch Vs Object
To Pseudo Relational Impedance Mismatch

8. Semi-Structure Data
“Batman of Gotham City, MA died Friday at Arkham
Medical Center in Boston after a bout with cancer. He
was 66.
Born in Revere, he was raised and educated in Salem, MA.
He was a member of St. Mary’s Church in Salem, MA, and
is survived by his wife, Jane N., and two children, John A.,
Jr., and Lily C., both of Winchester, MA.
A memorial service will be held at 10:00 AM at St. Mary’s
Church in Gotham.”

11. Sparse Table

12. Schema Evolution
Varchar(20) Varchar(20)
Int Double
Varchar(20) Varchar(200)
Date dd/mm/YY Date YY/mm/dd
100M records/DB size = 2TB

13. MongoDB

14. MongoDB

15. Beauty of MongoDB

16. Beauty of MongoDB

17. Beauty of MongoDB

18. Beauty of MongoDB

19. Beauty of MongoDB

20. Beauty of MongoDB

21. Beauty of MongoDB

22. Beauty of MongoDB

23. Dynamic Attribute

24. Dynamic Attribute

25. Dynamic Attribute

26. RBMS Ghost

27. Eventually Consistency

28. Not silver bullet

29. What is not for Mongo
• Graph Data
• Very Rich Object Oriented Model
• Structure Data
• Analytical Data

30. Polyglot Persistence

31. Q and A
www.mongodb.in.th