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Session Bean: is a non-persistent object that provides some business logic running on the server. Session beans do not provide system break down. There are two kinds of session beans
1. Stateless session beans
2. Stateful session beans
Entity Bean: is a persistent object that presents object views of the data, generally a row in a database. They have the primary key as a unique key identifier. Multiple EJB clients can give each entity bean. Entity beans may provide system shutdowns. Entity beans can have two kinds of persistence
1. Container-Managed Persistence (CMP) - The container is responsible for providing the bean's state.
2. Bean-Managed Persistence (BMP) - The entity bean is responsible for giving its own state.
Message-driven Bean: is added with the Java Message Service (JMS) to give the ability to react as a message consumer and perform asynchronous processing between the message producer and the server.
Explain Parentheses in Java ? Sometimes the default sequence of evaluation isn't what you want. For example, the formula to change a Fahrenheit temperature to a Celsius tempera
How can you justify that a DBMS is better to use than Flat-file database? A DBMS takes care of the storage, retrieval, and management of large data sets on a Database. It give
What is the use of throws keyword ? Rather than explicitly catching an exception you can declare in which your method throws the exception. This passes the repsonsibility to h
Notice that each row now has the type of customer and the additional data needed. calculateBill remains the same in Customer. However, the calculateBill in Corporate will add a
var temp =14; var y = 2; temp document.write(temp);
program t ofind area under the curve y=f(x) between x=a and x=b integrate y=f(x) between the limits a and b
What is the preferred organizational structure for the organization? The Network Organization is becoming the preferred organizational structure.
A preconfigured JMS object (a resource manager connection factory or a destination) formed by an administrator for the use of JMS clients and placed in a JNDI namespace
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