This document discusses polyglot persistence in enterprise cloud applications, detailing the advantages and disadvantages of both RDBMS and NoSQL databases. It highlights the importance of choosing suitable data storage technologies based on application needs and outlines the challenges and benefits of implementing a polyglot persistence architecture. Various references and insights from experts in the field are also included to provide further context on the topic.

1. MASTEROF COMPUTER
APPLICATIONS
Polyglot Persistence forEnterprise
Cloud Applications
Lars Albino Lemos
Underthe Guidance of: Dr. K. Jaya
MCA 2012-2015 LARS ALBINO LEMOS

2. Polyglot Persistence forEnterprise Cloud Applications
› CAP Theorem
› Persistence RDBMS vs NoSQL DB
› Enterprise Cloud Infrastructures & Applications
› Polyglot Persistence

3. Polyglot Persistence forEnterprise Cloud Applications
› CAP Theorem
› Eric Brewer on distributed systems.

4. Polyglot Persistence forEnterprise Cloud Applications
› CAP Theorem Implementation
› There is Good, Cheap, Fast service.

5. Persistence
RDBMS
Advantages
Standard Query Interface (SQL)
Widely used and understood (Oracle, MySQL, SQL Server, PostgreSQL)
Tested in real environments(Concurrency and Mission Control)
Efficient use of storage space if data normalized properly(Normal Forms)
Great tools support (Reporting )
ACID semantics (Atomicity, Consistency, Isolation, Durability)
Incredibly flexible and powerful query language(PL/SQL, T-SQL)
Great framework support(.NET, Java SE/EE/ME )

6. Persistence
RDBMS
Disadvantages
Complex object graphs does not map very
well with tables structures.
 Difficult to evolve Schema with time.
 Data constraints and JOINs can be
expensive at runtime.
 Difficult to scale horizontally.
 Impendence mismatch

9. Persistence
NoSQL
Advantages
Schema Less
Scales writes and reads
Easy to scale horizontally
Solve practical use-case
Limitations
Complexity due to schema-less.
Inter-aggregate relations are hard to maintain

10. Enterprise Cloud Infrastructures

11. Enterprise Cloud Applications

12. Polyglot Persistence
Why Polyglot?
›Using multiple data storage technologies, chosen based upon the way data is being
used by individual applications or components of single application.
›Polyglot persistence will occur over the enterprise as different applications use
different data storage technologies. It will also occur within a single application as
different parts of an application’s data store have different access characteristics.
Advantages
Rapid access for reads and writes. No need to be durable
Needs transactional updates. Tabular structure fits data.
Needs high availability across multiple locations. Can merge inconsistent writes.
Rapidly traverse links between friends, product purchases and ratings.
Lots of reads, infrequent writes. Products make natural aggregate.
SQL interfaces well with reporting tools.
Large-scale analytics on large cluster.

13. Polyglot Persistence
Why Polyglot?
Limitations
Decisions: We have to decide what data storage technology to use, rather than just
go with relational.
Organizational change: How will our data groups react to this new technology.
Immaturity: NoSQL tools are still young and full of rough edges that new tools have.
Due to that there are no good patterns.
Eventual Consistency Paradigm: How will different stakeholders in the enterprise
data deal with that, how they will enforce rules to sync data across systems.

14. Polyglot Persistence

15. Polyglot Persistence
SystemArchitecture

16. Polyglot Persistence
 Ecommerce Architecture Implementation

17. Polyglot Persistence
 Ecommerce Product Implementation

18. References
Thinking Beyond RDBMS – ShekharGulati
Data Access for Highly - Scalable Solutions : Using SQL, NoSQL, and Polyglot Persistence - Douglas McMurtryAndrew
OakleyJohnSharpMani SubramanianHanz Zhang
NoSQL Distilled: A Brief Guide to the Emerging World of Polyglot Persistence - PramodJ.Sadalage, MartinFowler
Seven Databases in Seven Weeks: A Guide to Modern Databases and the NoSQL Movement
- Eric Redmong, JimR. Wilson

19. ENDOF PRESENTATION
THANKYOU
LARS ALBINOLEMOS