What are the main components of
Teradata System?
Teradata has 3 main components which do wonder to
the world of data management & Storage.
It has
1. PE (Parsing Engine) : Acts as a gate keeper to
the Teradata Systems and manages all sessions, interprets the SQL statements for
any errors, manages the access rights for the user, defines a least expensive
optimizer plan for the query to execute and sends the request to AMP via Bynet.
2. Message Passing Layer (Bynet) : Carries
messages between the AMPs and PEs, provides Point-to-Point and Broadcast
communications, Merging answer sets back to the PE and Making Teradata
parallelism possible
3. AMP (Access Module Processor) : AMP is the heart
of Teradata which does most of the operations for data storage and retrieval.
It also takes care of finding the rows requested, Lock management of the
tables and rows, Sorting rows, Aggregating columns, Join processing etc.
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