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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:
Differentiate uni-Processor OS from Multi-Processor OS? Uni-processor OS : Uni-processor OS'es is designed to schedule tasks on a single uPs just whereas Multiprocessor O
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Java Server Page is a standard Java extension that is described on top of the servlet Extensions. The goal of JSP is the simplified formation and management of dynamic Web pages. J
When is AlreadyBoundException thrown and by which method? Ans) AlreadyBoundException is thrown by bind(String name) method when a remote object is already registered with the re
Sequence diagrams are communication diagrams which detail what messages are sent and when. The sequence diagrams are placed according to time. The time performs as you move from to
I want Linux server expert with Tomcat skills Project Description: I want a Linux server expert to look in to an issue with my domain. It is down since three days as there is
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#question.Write a program that computes the edit distance (also called the Levenshtein distance, for its creator Vladimir Levenshtein) between two words. The edit distance between
What is numeric promotion? Numeric promotion is the conversion of a smaller numeric type to a larger numeric type, so that integer and floating-point operations may take place.
Example: You have a class named "Set" in a project folder "e:\myProject" and package named com.zxy.client, will you be able to compile and execute it as it is
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