Traceability Matrix:

This maps the requiremnts to Testcases

In SRS Document, for every requirement there will be a 
Requirement ID.

Using this Requirement ID we can identify the requirement 
in the SRS document.

For example 
Some Project Has 300 requirements

The requirements ID will be as follows:

R 1.0 
R 2.0
R 3.0
.
.
.
.
.
.
R 300.0

Again every requirement may be composed with some fair 
number of sub-requirements.

Sub Requiremnts ID will be as follows:

R 1.0               Main requirement-1
  R 1.1             Sub-requirement-1 of Main requirement-1
  R 1.2....         Sub-requirement-1 of Main requirement-1
.....

I think this explanation is enough about Requirement ID

Traceability Matrix looks like this
---------------------------------------------------------
RequirementID  |  FunctionalTestCaseID |   GUITestCaseID 
----------------------------------------------------------
R 1.0             FTC1,FTC2,FTC3         GTC1,GTC2,GTC3

R 1.1             FTC4,FTC5,FTC6         GTC4,GTC5,GTC6

R 1.2             No Test Case ID's

...............Etc

Like this All requirements ID will be mapped to Prepared 
Test Case IDs'

For Example Look At Requirement ID R1.2 There is no 
Functional Testcase ID present under the Functional 
Testcase ID Column.

This says That we are not prepared the testcases For the 
Requirement ID R 1.2

If we are not prepared testcases for R 1.2 we won't test 
the related functionality.

This area may have some critical bugs.

So Traceability Matrix will tell the coverage of Testing.

Even in the Regression Testing If some functionality 
is not working well or it has some bugs we will post the 
bug to development team.

Development team will fix and Gives the new build.
This defect fixing information will contains the Build 
release note.

Now using Trtaceability matrix we can identify the 
Requirements which have bug fixes and Related 
functionalities.

So we will repeat these Functionalities related testcases
in regression Testing.

In this way we will use the traceability matrix in 
regression tetsing.

Byee

Rajendra prasade Reddy

thankyou very much rajendra since u had spent a lot of time 
in explaining me clearly .... really helped me a lot

Soon i will uplaod a template for Traceability matrix

Byee

Rajendra prasade Reddy

rajendra_penumalli@yahoo.com
9885162742
if u have please call me or mail me without hesitation

Mr. Rajendra you have given very good description about 
tracability matrix.
thank you so much...
really great help

Mr. Rajendra ,

Realy u have given very good description of tracability 
matrix.
recentaly I faced this question in an interview
thanks

Hi rajendra
Realy a good answer. pls upload tracibility metrix template