This blog will guide you in preparing for SCEA for exam 310-052.
My Advice:
* Having practical experience is must for this exam.
* Do not mug the concepts. If you have not worked on a concept (e.g. EJB, JSF etc), I would suggest reading the basics first.
Section 1 : Application Concept and Principles
* OOPS Concept: Inheritance, Abstraction, Polymorphism, Information Hiding, Interfaces . Often may of these terms get confusing. I just went to the wiki to know definition of each. Here is my one liner :
Inheritance - Extend the functionality
Abstraction - Hiding the implementation. Simply providing what needs to be implemented
Ploymorphism - Multiple Forms (Like Overloading , Overriding)
Information Hiding - Preventing direct access to data. Java Analogy (private/protected fields)
Interfaces - Defines publically exposed methods. Implements Abstraction.
Any person with sufficient amount of experience in J2EE can relate these terms practically.
* Separation of concern - Multi Tier
Two Tier : Client/Server
Three Tier: Client ---- Application Tier----- Data Tier
n Tier : Client (Borowser) ------ Presentation Tier(JSP Servlets) ----- Business Tier (EJBs) ----- Integration Tier (DAO, Persistence) ----- Resource Tier (Data Store)
* Separation of concen - Multi Layer
Layer 1--- Application
Layer 2 --- Container API (Servlet/JSP API, EJB API -- J2EE Specs)
Layer 3 ---- Container (J2EE Containers like Weblogic , Tomcat etc)
Layer 4 ----- Operating System and Virtualization (Windows, Linux, Mac, Solaris etc).
Layer 5 ------ Physical (Computing , Storage, Network etc)
Section 2 : Common Architectures
* Terms : Scalibility, Availability, Maintainability, Mangeability, Reliability, Extensibilty, Performance, Security. Comparing 1 tier, 2 tier , 3 tier and n tier architecture wrt to these terms
This document was helpful in explaining the above :
http://www.javacamp.org/scea/commonarch.html
Section 3: Integration and Messaging
* JCA, WebServices , JMS Comparision
http://www.ibm.com/developerworks/webservices/library/ws-jcajms.html
* JMS API Recap
http://java.sun.com/products/jms/tutorial/1_3_1-fcs/doc/prog_model.html
