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EJB elements operate inside a container environment and rely heavily on the container to give security. The four key services needed for the security are:
1. Identification: In Java security APIs this identifier is define as a principal.
2. Authentication: To show the identity one must present the credentials in the form of password, digital certificate, swipe card, finger prints etc.
3. Authorization (Access Control): Every secured system should limit access to particular users. The common route to enforce access control is by maintaining security privileges and roles.
4. Data Confidentiality: This is performed by encryption of some sort. It is no good to shield your data by authentication if someone may read the password.
The EJB specification services itself exclusively with authorization (access control). An application using EJB may specify in an abstract (declarative) and portable way that is allowed to access business functions. The EJB container accepts the following actions:
Inheritance - is the inclusion of state and behavior of a base class in a derived class so that they are accessible in that derived class. The key benefit of Inheritance is that
I want someone to help me prepare a simple inventory system. I am not a programmer trying to learn as i go. Skills required: Android, Java, iPhone, Mobile Phone, Objective
Define the difference between StringBuffer and String class?
write a java program to test for class Person Student faculty Employee
How you Returning Values From Methods in java ? It's frequent meaningful to have a method return a value to the class which is known as it. This is accomplished through the ret
Develop a desktop application with Lync 2013 Project Description: We want to make desktop application which interfaces to Lync 2013 ? Skills required are .NET, ASP, Java,
What are the advantages of multimedia presentations? Write any five. Following are the benefits of multimedia presentations: • Great tool for efficiently communicating ideas
Synchronous messaging involves a client that waits for the server to respond to a message. So if one end is down the whole communication will fail.
how many keywords in java
write a program to find the minimum no of colors to fill a board where some of the elements of different color are already placed.
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