what is amp plz explanation
- 5 Answers
- 6963 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / tdguy
Access Module Processor stores and retrieves the
distributed data in parallel. Ideally, the data rows of
each table are distributed evenly across all the AMPs.
Their job is to receive the optimized plan steps, built by
the PE after it completes the optimization, and execute
them.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / rahul
Amp is a virtual process, it performs dml,ddl operations
and also responsible for applying and releasing locks.
amp having some space to perform operations,like storing the
data.
this space can not be shares any other amp in the node.
dats y we call Teradata architecture is shared nothing.
amps are associated with disk,which will invokes controllers
of the disk after completion of its task.
Thanks
Rahul
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / yuvaevergreen
AMPS are the components which operate in parallel. PE
dispatches the plan to AMP thru BYNET. Each amp is connected
to vdisk. AMPs also perform functions like sorting of rows.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / vinoth
Adding to the above points,
Rows will be distributed evenly among the AMP's if you specify the Primary Index for a table.
If you able to use the One AMP operation then you will be able to retrieve faster results. If you use all the AMP then it's called as Full table scan and the query results are very slow here.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is teradata?
How teradata makes sure that there are no duplicate rows being inserted when its a set table?
What is logical data model?
how teradata fetches a row from primary index table?
hi frnds i want to learn teradata utilities and teradata dba real time. i have 1+ years of experience in teradata. so i want to go deeply in Tearada. plz let me know at my email id who r best to learn from. im lookng for a realtime guy in HYD or Banglr. Thanks in advance. Rajesh my email-id: rajeshmss87@gmail.com
What is teradata? What are some primary characteristics of teradata?
Which is more efficient group by or distinct to find duplicates?
What is a clique?
In Teradata, what is the significance of UPSERT command?
How to view every column and the columns contained in indexes in teradata?
What is multi insert?
Why MultiLoad Utility supports only Non Unique Secondary Index(NUSI) in the Target Table ?
Teradata 
