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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:
What is the difference between an Interface and an Abstract class? An abstract class can have instance methods that execute a default behavior. An Interface can only declare co
The game of Kala is played on a rectangular board: In front of each player are six pits numbered 1 to 6 (called the 'side pits'). To the right of a player's side pits is a
identify the possible classes and methods in the classes which can be used in a sales tracking system for a fast food restaurants
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Suppose we have a big project. Draw hierarchy of the people involved in the project? Executive Team CEO, COO, CMSO Quality Architecture Team Business Development Team Technolog
Annotation or Attribute oriented programming There are two types of code generation processes. Passive code generation: is template driven . Input process are used in mo
i need java program for account to hold payment of student
What can you do with an exception once you've caught it? 1. Fix the difficulty and try again. 2. Do anything else instead. 3. Exit the application along with System.exit() 4
Define enumeration? Enumeration is explained as values type that having of a set of named values. These values are constants and are called enumerators. An enumeration type is
Object-to-Relational (O/R) mapping : There are various ways to persist data and the persistence layer is one of the most important layers in any application development. O/R ma
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