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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:
The AOP module is used for developing aspects for our Spring-enabled application. Much of the support has been given by the AOP Alliance in order to ensure the interoperability amo
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Describe, in general, how java garbage collector works?
Loosely coupled SOA SOA gives in loosely coupled application elements, in which message is not necessarily tied to a particular database. Loose coupling actives enterprises to
Classes are attached into the JVM as they are referenced by name in a class that is already running in the JVM. So, how is the staring class loaded? The very first class is espec
Question: (a) State and explain clearly FIVE new features of Actionscript 3.0 as compared to Actionscript 2.0. (b) Explain clearly the concept of events and events listen
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What is Constructor? A constructor is used to initialize a newly created object. It's called just after memory is allocated for the object. It can be used to initial
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