Bikram Bhusan Sinha

• Jul 12th, 2006

Clusters are a group of servers working together to achieve a common goalsIt will provide the following benefits to an application :1. High availability2. Scalability - vertical and horizontal3. Load ...

srisubu

• Jul 21st, 2005

A cluster is loosely coupled group of servers that provide a unified, simple view of the services that they offer individually. Servers in a cluster may or may not communicate to one another. Generall...

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mallikharjun

• Jul 7th, 2006

EJBObject class  is made by the Container

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Anil Patel

• Jul 6th, 2006

SB2's transaction attribute should be either "Requires New" or "Not Supported". SB1 can be run in any transaction. It doesn't matter.

kishor

• May 31st, 2006

sb2 should run with transaction attribute "Not Supported", and sb1 with "Supports"

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krishnaprasad

• Jun 21st, 2006

using pool tag in xml file it is possible..ok

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gururaj

• Jun 20th, 2006

No stateful session beans are not scable since it has to remember its state w.r.t each client..however stateful session beans can be activated and passivated.

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Answered by Jey on 2005-05-08 12:47:06: Entity bean represents the real data which is stored in the persistent storage like Database or file system. For example, There is a table in Database called Credit_card. This table contains credit_card_no,first_name, last_name, ssn as colums and there are 100 rows in the table. Here each row is represented by one instance of the entity bean and it is found by...

sujatawankhede

 Profile Answers by sujatawankhede Questions by sujatawankhede

• Jun 19th, 2006

entity bean are used to represent state of unique entity.for example. each employee have unique ID .

Ritesh Patni

• Jul 25th, 2005

The entity bean is used to represent data in the database. It provides an object-oriented interface to data that would normally be accessed by the JDBC or some other back-end API. More than that, enti...

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Naveen

• Jun 6th, 2006

I'll  take a best exmaple to explain.Statefull sessionbean : ATM operationStateless Session Bean : Credit card Once we log into the ATM by entering PIN number. We can do multiple transacations li...

divya

• Jul 29th, 2005

Stateful session beans are used when there is converstional state and when there is a need of temporary storage  Stateless session bean are used when there is no conversational state and when session bean has to be used only for database access

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prefer not to say

• May 31st, 2006

I would suggest everyone to check with any one because many people who might be novice to Java might think that the answer is correct...so please refrain from posting half correct answersEjb component...

antony_praveen80

 Profile Answers by antony_praveen80 Questions by antony_praveen80

• Mar 24th, 2006

The EJB architecture is build upon the DCOM mechanism. So The bean class  can be accessable by across the network and it can be reused anywhere.

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Kawalpreet Ghai

• May 30th, 2006

We can know the name of the bean through the deployment descriptor .THe tag <ejb-name>has the name of the bean .

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suman

• May 26th, 2006

 Native code is implemented in Java using system.classLoader("method Name");Eg: you have a native method methos "Test" written in 'C' you can implement it in java asstatic Test{System.classLoader...

Ananda

• Feb 2nd, 2006

You have to declare the method containing the Native code with the keyword 'Native'.

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srini

• May 22nd, 2006

the methods in the super interface autometically comes into extended interface like inheritance

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krishna_darl

 Profile Answers by krishna_darl Questions by krishna_darl

• May 21st, 2006

CMP means container takes care fo all the database access code synchronization, including adding and deleting entities(records/rows in the database)BMP means you write the database access code(the JDBC statements) , for when the container tells you its time to go to the database.

RajeshRokkam

• Jun 2nd, 2005

CMP::  Advantages: 1)Easy to develop and maintain. 2)Relationships can be maintained between different entities. 3)Optimization of SQL code will be done. 4)Larger and mor...

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selva_mca1980

 Profile Answers by selva_mca1980 Questions by selva_mca1980

• May 19th, 2006

Go to reffer ejb2.0 book

mailtorkthakur

 Profile Answers by mailtorkthakur Questions by mailtorkthakur

• May 12th, 2006

EJB2.1=> create a method which may return a collection/List. => Implement EJB-QL perform query based on your paramenter and return resultEJB3.0=> Use nammed Query

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moulali

• May 19th, 2006

Hi  Sadasivarao    Without using entity beans we can do database transactions through Springs .Spring can be used to configure declarative transaction management, remote access to ...

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tejaswee

 Profile Answers by tejaswee Questions by tejaswee

• May 16th, 2006

Dear, Remember EJB is an API for distributed computing, it can be accessed form different client (CORBA, Thick Clients like Swings or stand alone Java programms etc..), including Servlets or JSP (Thin...

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tejaswee

 Profile Answers by tejaswee Questions by tejaswee

• May 16th, 2006

Dear,  Both of them are java solution for distributed computing. RMI offers remote access to an object running in another JVM and no other services. But EJB offers far more services tha...

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mailtorkthakur

 Profile Answers by mailtorkthakur Questions by mailtorkthakur

• May 12th, 2006

You can use delete_statement :: = delete_clause [where_clause]The delete clauses determine the type of the entities to be deleted. The WHERE clause may be used to restrict the scope of the delete operation

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EDESIA

• May 9th, 2006

What is a primary key in tables used in data entry?

Sailaja

• Sep 20th, 2005

Primary key class has to meet the following requirements?         The access control modifier of the class is public. ?       ...

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Nitesh

• May 6th, 2006

It's totally dependent on condition. When there is a situation that we have to provide the partial implementation of some or all the method of a Object then One should go towards Abstract class. When ...

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dhanush

• May 1st, 2006

Synchronised block is a thread safe,where as a normal block is not thread safe.only one thread at atime can access a synchronised blockbut not for a normal block

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