What is an abstract class? Abstract classes are used in java to create a class with some default method implementation for subclasses. An abstract class can have abstract method without body and it can have methods with implementation also. What is an interface? What is static block? Java static block is the group of statements that gets executed when the class is loaded into memory by Java ClassLoader. It is used to initiali.

Basic Unix Concepts For DBA. Posted by Desam Venu Madhava Reddy. Posted by Desam Venu Madhava Reddy.

Which one is the default transaction factory in hibernate? With hibernate 3. 2, default transaction factory is JDBCTransactionFactory. Posted by Desam Venu Madhava Reddy. Posted by Desam Venu Madhava Reddy.

Does the JDBC-ODBC Bridge support multiple concurrent open statements per connection? No, we can open only one statement object when using JDBC-ODBC Bridge. Posted by Desam Venu Madhava Reddy. What are the locking system in JDBC. Optimistic locking does not use exclusive locks when reading. Posted by Desam Venu Madhava Reddy.

Posted by Desam Venu Madhava Reddy. What is partial dependency? Posted by Desam Venu Madhava Reddy. It is not the case that B? Posted by Desam Venu Madhava Reddy. A candidate key is one that.

Saturday, October 12, 2013. Sys show parameter spfile;. Sys create pfile from spfile;.

One data block corresponds to a specific number of bytes of physical database space on disk. Posted by Desam Venu Madhava Reddy. What is network database link? Posted by Desam Venu Madhava Reddy. What is public database link? Posted by Desam Venu Madhava Reddy. What is private database link? Oracle 11g DBA Concepts.

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. Posted by Desam Venu Madhava Reddy. Why request object is created per request not reused? Posted by Desam Venu Madhava Reddy.

Spring performs two major roles for a Java application. Spring is also a framework because it provides libraries of classes that make it easier to accomplish common tasks such as transaction management, database integration, email, and web applications. Posted by Desam Venu Madhava Reddy.

What is ActionMapping Class in Struts? ActionMappings is a collection of ActionMapping objects. The ActionMapping contains the knowledge of how a specific event maps to specific Actions. This allows Action to access the information to control flow. xml determines what Action class the Controller calls.