What are the types of tables in Teradata

as far as i my knoweledge goes we have ,correct me if i am wrong. 1 SET 2 MULTI SET 3 GLOBAL TEMPORARY TABLES 4 TEMPORARY TABLES and there is one more i reckon which i cant remember.

Write a single SQL to delete duplicate records from the a single tab

One need have atleast a unique column such as timestamp col (and assumption is to keep lowest tmpstmp) OR some key col say IPID (again keep lowest value).. One determined - Have a nested Select on all rows (except that key col) with group b

What is Join Index in TD and How it works?

JOIN INDEX: ----------- Join Index is nothing but pre-joining 2 or more tables or views which are commonly joined in order to reduce the joining overhead. So teradata uses the join index instead of resolving the joins in the participating bas

I have all the TERADATA Certification Dumps for the below:

HI friend please send me teradata dumps. my email id is kiran_teradata@Ymail.com Thanks

What is the process to restart the multiload if it fails?

MULTILOAD will creates 2 error tables, 1 work table When MULTILOAD fails We have to unlock the Main Table, here error tables and work tables are not locked like FLOAD To Unlock the Main Table in Mload RELEASE MLOAD ;

Explain about Skew Factor?

The Table is having too many Duplicate rows, The Skew table will hadle the duplicate rows up to limitations,Once its cross the no of Rows it will effect on Performence.The Dba people will the SKEW tables. I think this Answer helps u

What is the diffrence between Multiload & Fastload interms of Pe

Fastload is used to load empty tables and is very fast, can load one table at a time. Multiload can load at max 5 tbls at a time and can also update and delete the data. Fastload can be used only for inserting data, not updating and deleting

What is use of compress in terdata?Explain?

Compression is used to Minimize the table size, for example when the table size is increasing anonymously We can use Compression to reduce the size of the table Conditions: 1.Compression can be declared at the time of table creation 2.We can

How does indexing improve query performance?

By creating index on single or multiple columns, query takes index access path instead of full table scan. Full table scan is costilier operation where it has to visit all rows in the table whereas index operation just accesses the index sub

Why MultiLoad Utility supports only Non Unique Secondary Index(NUSI)

Like FastLoad, MultiLoad does not support Unique Secondary Indexes (USIs). But unlike FastLoad, it does support the use of Non-Unique Secondary Indexes (NUSIs) because the index subtable row is on the same AMP as the data row. MultiLoad uses

What is FILLER command in Teradata?

while using the mload of fastload if you don;t want to load a particular filed in the datafile to the target then use this filler command to achieve this

what is the difference between start schma and Fsldm?

A star schema has one Fact tables and many dimensional tables to store the related. FSLDM (Financial services logical data model) is a model proposed and designed by NCR to cater the needs of financial sectors, specially the Banking domain.

Please tell me a query to find the Primary key,Foreign key,primary I

We can find the information of all the indexes in the system table "dbc.indices"

How to Skip or Get first and Last Record from Flat File through Mult

MultiLoad is going to need to know the structure the INPUT flat file. Use the .LAYOUT command to name the layout. It is used to designate the starting location for this data based on the previous fields length. If you are listing fields in ord

How a Referential integrity is handled in Teradata?

TPUMP

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