The place to hold messages

A queue is a data structure to hold messages.

Cluster  is collection of Quque Managers

cluster is nothing but group of queue managers logically
connected in some way.

Cluster is nothing but grouping of Application Servers

Cluster is a logical grouping of application server 
processes that provide workload balancing and High 
availabilty of appications.

Node agent is the process which listen the command from 
DMGR to start and stop the Node.each and every box have 
node agent, a box can have miore than one node.

clustering is used to provide availiability and failover. 
If one server in cluster fails to serve the request ,other 
server in the cluster serves that request.

Channel is a Logical communication. These are of two types 
1.Message Channels and 2.MQI(message queue interface) 
channels.

channels are objects that provides a communication path  
from one queue manager to another.

channel is logical communication between two queuemanagers
..which transfers meesage from one qm to another qm..

Messaging means that programs communicate with each other 
by sending data in messages and
not by calling each other directly.

Message means some data  or information which is sending to 
other MQ end.

A message is a string of bytes that has meaning to the 
applications that use it
Message = Header(s) + Application Data
A message consists of a header and the attached application 
data.
Headers like:
Unique Message Id, Routing information, Message format

The data part of a message:
A record from an indexed or flat file
A row from a DB2 table
Individual columns from DB2 tables
Multiple rows or records

Local Queues,Alias Queues,Remote Queues and Model queues.

1.Local Queue
2.Remote Queue
3.Transmission Queue
4.Initiation Queue
5.Dynamic Queue
6.Alias Queue
7.Dead-letter Queue
8.Reply-to-Queue
9.Model Queue
10Repository Queue

1.Local queue -is a real queue
2.Cluster queue -is a local queue that is known throughout 
a cluster of queue managers
3.Remote queue -structure describing a queue
4.Transmission queue(xmit quueue) -local queue with special 
purpose
5.Initiation queue -local queue with special purpose
6.Dynamic queue -local queue created "on the fly"
7.Alias queue -if you dont like the name
8.Dead-letter queue -one for each queue manager
9.Reply-to-queue -specified in request message
10.Model queue -model for local queues
11.Repository queue -holds cluster information

In weblogic we can deploy application :-

1. throught Admin console
2. Command Prompt
3 Using WLST utility.

internet explorer will works only on windows based 
application. i.e., in closed systems.

but nescape navigator(developed in UNIX) will work in open 
system(Unix, Linux) as well as in closed systems(windows).

just i'm expecting. but, not sure.

Internet Explorer is make of Microsfot and
Netscafe Navigator is make of Netscafe

When you are using Internet Explorer (IE) attached
documents created in Microsoft Office (Word, Excel,
PowerPoint) will open up in the content frame. Attached
Office documents in Netscape will ask you if you want to
"download the document to your hard drive" or "open it in
its current location." The former will not open the document
but save it to your computer. The latter will launch the
program in which the document was created.

With IE, pressing the Enter key will activate such buttons
as "Submit" and "Log-in". In Netscape you must actually
click on these buttons.


Note: Netscape does not always work properly. Sometimes
items an instructor adds will not appear where they should,
links may not function properly, etc. This is why it is
strongly encouraged that everyone use Internet Explorer 5.5
or above for all functions of Blackboard. In any case DO NOT
use the AOL browser. Certain functions such as assessments
do not work properly.