Set - 4

Question 31 :

What is rollback ?

Answer :

The point in a transaction when all updates to any databases involved in the transaction are reversed.

Question 32 :

What is root ?

Answer :

In a hierarchy of items, the one item from which all other items are descended. The root item has nothing above it in the hierarchy. See also hierarchy, class, package.

Question 33 :

What is RPC ?

Answer :

Remote Procedure Call. Executing what looks like a normal procedure call (or method invocation) by sending network packets to some remote host.

Question 34 :

What is runtime system ?

Answer :

The software environment in which programs compiled for the Java virtual machine1 can run. The runtime system includes all the code necessary to load programs written in the Java programming language, dynamically link native methods, manage memory, handle exceptions, and an implementation of the Java virtual machine, which may be a Java interpreter.

Question 35 :

What is SAX ?

Answer :

Simple API for XML. An event-driven, serial-access mechanism for accessing XML documents.