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Mohan's OracleBook: What is transitive dependency ?

http://oracle.javabook.org/2013/07/what-is-transitive-dependency.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". What is transitive dependency? Transitive dependency is a functional dependency which holds by virtue of transitivity. A transitive dependency can occur only in a relation that has three or more attributes. Let A, B, and C designate three distinct attributes (or distinct collections of attributes) in the relation. Suppose all three of the following conditions hold:. It is not the case that B? Oracle 11g DBA Concepts.

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Mohan's OracleBook: What is candidate key, alternate key and composite key ?

http://oracle.javabook.org/2013/07/what-is-candidate-key-alternate-key-and.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". What is candidate key, alternate key and composite key? A candidate key is one that can identify each row of a table uniquely. Generally a candidate key becomes the primary key of the table. If the table has more than one candidate key, one of them will become the primary key, and the rest are called alternate keys. A key formed by combining at least two or more columns is called composite key. Oracle 11g DBA Concepts.

oracledbainterviewquestions.javabook.org

Mohan's OracleDBA Interview Questions: What is network database link ?

http://oracledbainterviewquestions.javabook.org/2013/07/what-is-network-database-link.html

Mohan's OracleDBA Interview Questions. Please send your Questions and Answers or Feedback to "mohan. What is network database link? Network database link is created and managed by a network domain service. A network database link can be used when any user of any database in the network specifies a global object name in a SQL statement or object definition. Oracle 11g DBA Concepts. Basic Unix For DBA. Wwwjavabook.org. Powered by Blogger.

servlets.javabook.org

Mohan's ServletsBook: Why request object is created per request not reused ?

http://servlets.javabook.org/2013/03/why-request-object-is-created-per.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". Why request object is created per request not reused? Request object is created per request not reused because HTTP is a stateless protocol and it does not expect the data to be remembed. But the servlet object is created once not per reuest. If different request comes from different browsers it creates different request threads rather than different servlet objects. Oracle 11g DBA Concepts. Oracle DBA Interview Questions.

jsp.javabook.org

Mohan's JspBook: What is the life-cycle of JSP?

http://jsp.javabook.org/2012/12/what-is-life-cycle-of-jsp.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". What is the life-cycle of JSP? When a request is mapped to a JSP page for the first time, it translates the JSP page into a servlet class and compiles the class. It is this servlet that services the client requests. A JSP page has seven phases in its lifecycle, as listed below in the sequence of occurrence:. Oracle 11g DBA Concepts. Oracle DBA Interview Questions. Basic Unix For DBA. Wwwjavabook.org. Powered by Blogger.

servlets.javabook.org

Mohan's ServletsBook: Difference between session and context object ?

http://servlets.javabook.org/2013/03/difference-between-session-and-context.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". Difference between session and context object? Session object is created for a specific request and the values in it are accessible within that request whereas Context object is created for web application and the values in it will be accessible for all requests and accessible across the application. Oracle 11g DBA Concepts. Oracle DBA Interview Questions. Basic Unix For DBA. Wwwjavabook.org. Powered by Blogger.

struts.javabook.org

Mohan's StrutsBook: Differences between web.xml and sturts-config.xml ?

http://struts.javabook.org/2013/07/differences-between-webxml-and-sturts.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". Differences between web.xml and sturts-config.xml? It is used for the deployment descriptor for web applications. Webxml is used for making connection between web container and web application. It is read by container when we start the container. It is used for deployment descripror for struts application. It is used for making connection between view and controller. It is read by init() method of ActionServlet. Basic Unix For DBA.

struts.javabook.org

Mohan's StrutsBook: Explain life cycle of ActionForm ?

http://struts.javabook.org/2013/07/explain-life-cycle-of-actionform.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". Explain life cycle of ActionForm? The lifecycle of ActionForm invoked by the RequestProcessor is as follows:. Retrieve or Create Form Bean associated with Action. Store FormBean in appropriate scope (request or session). Reset the properties of the FormBean. Populate the properties of the FormBean. Validate the properties of the FormBean. Pass FormBean to Action. Oracle 11g DBA Concepts. Oracle DBA Interview Questions.

oracle.javabook.org

Mohan's OracleBook: What is partial dependency ?

http://oracle.javabook.org/2013/07/what-is-partial-dependency.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". What is partial dependency? A Partial dependency is a dependency where A is functionally dependent on B( A - B), but there is some attribute on A that can be removed from A and yet the dependency stills holds. For instance if the relation existed. Oracle 11g DBA Concepts. Oracle DBA Interview Questions. Basic Unix For DBA. Wwwjavabook.org . Powered by Blogger.

struts.javabook.org

Mohan's StrutsBook: How to prevent multi-click using struts tokens ?

http://struts.javabook.org/2013/07/how-to-prevent-multi-click-using-struts.html

Please send your Questions and Answers or Feedback to "mohan@javabook.org". How to prevent multi-click using struts tokens? Mutli-click prevention using struts tokens- Prevent Duplicate Submission :. SaveToken() : generate the token key and save to request/session attribute. IsTokenValid() : validate submitted token key against the 1 store in request/session. ResetToken() : reset the token key. Follow the steps to setup Mutli-click prevention using struts tokens. First saveToken() then forward to your jsp.