Answer Posted / rajashree

The Wrapper class represents the base class for a set of
data sources. This class provides library initialization
services and access to the data source servers that the
wrapper supports. The Wrapper class maintains the following
information:
The wrapper name.
The wrapper core library name. The returned name is the
name of the native library that loaded the wrapper.
A WrapperInfo object that contains all of the information
that pertains to this wrapper. This information gets stored
in the federated server's system catalog as a result of
issuing the DDL statements CREATE WRAPPER or ALTER WRAPPER.
The Wrapper class is a wrapper class for the Java API.

JVM (Java Virtual Machine): A Java runtime environment,
required for the running of Java programs, which includes a
Java interpreter. A different JVM is required for each
unique operating system (Linux, OS/2, Windows 98, etc.),
but any JVM can run the same version of a Java program.

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