it is a performance appraisal in which one will get 
appraisal form the boss, colouges,supervisiors etc. the 
appraisal is depend on the responces of them. if they give 
+ve responce s then he will get promotion otherwaise he 
will get demotion.

the 360 appraisal is that the appraisl given peers, 
subordinates,workers,head of the department etc that means 
the appraisal given from all the people working in the 
organizationis 360 degree appraisal. The half yearly report 
or yearly report of work schedule goes from the company to 
the head quater of all the workers performance is the 
appraisal  it contains all the demotion, promotion and 
other activities related to the perfomance.

This system, which solicits feedback from seniors 
(including the boss), peers and subordinates has been 
increasingly embraced as the best of all available methods 
for collecting performance feedback. Gone are the days of 
working hard to impress only one person, now the opinions 
of all matter, especially if you are in a leadership role 
(at any level). Every person in the team is responsible for 
giving relevant, positive and constructive feedback. Such 
systems also help in identifying leaders for higher level 
positions in the organization. Senior managers could use 
this feed back for self development.

360 degree appraisal means the employee receving the 
feedback gets rated by 360 raters.  It involves appraisal 
by those above, below and to the side of an indiviual 
employee, as well as self assessment in practice.

360 degree performance appraisal is one of the appraisal
system which is to know the overall performance of the
employee.Here the feedback of his performance is taken from
all the supervisors, collegues, subordinates and self
appraisal is also been the part of this appraisal

360 degree PA is the most comprehensive appraisal where the 
feedback about the employee's performance comes from all 
the sources that come in contact with the employee on his 
job,eg. peers, collegues, supervisors, subordinates, 
clients etc., including the employee himself. such 
appraisal can provide valuable information regarding 
the “on-the-job” performance of the employee.

"360" refers to the 360 degrees in a circle. The feedback 
would come from subordinates, peers, and managers in the 
organizational hierarchy, as well as self-assessment, and 
in some cases external sources such as customers and 
suppliers or other interested stakeholders.The results are 
also used by some organizations for making promotional or 
pay decisions, which is sometimes called "360-degree 
review."