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Data Warehouse Interview Questions
Questions Answers Views Company eMail

how will u load the data to diminision tables and fact tables,what is the hiraraichy why we are using hirarichy

TCS,

2 7268

suppose in my source flatfile i have 10000 records in that some of master table records missed table records missed then what will u do

Patni,

2134

how will u take the data from clint server and next what u do in datamodeling what u will u do in staging area what u will u do next what u are doing please give the step by step by process

Patni,

2172

in staging we are merging the data and remove the inconsistants data that type of situation what u will done and type of functions u can use

TCS,

2042

write a sql query following table some duplicate present 1 1 2 2 3 3 4 5 i want the output unique one column duplicate another column following format like unique duplicate 1 1 2 2 3 3 4 5

TCS,

2 6131

write sql query to filter the null value data following table? name age john 30 smith null null 34 sharp 24 i want the output following are name age john 30 sharp 24

HP,

2 6154

write a query to remove null value follwing table? col1 col2 col3 dinesh null null null suresh null null null prakesh i want the output col1 col2 col3 dinesh suresh prakesh

Accenture, TCS,

4 9842

write sql query to remove null value following table id name 101 dinesh null jyothi null bharathi 102 suresh null shilpha 103 prakesh null suma i want the output id name 101 dinesh 102 suresh 103 prakesh

Accenture,

5 11635

how to find the 5th highest salary form each department using 1.SQL Query 2. Informatica power center designer?

CTC,

4 26110

SEQUENTIAL FILE I HAVE ONE RECORD,I WANT 100 RECORDS IN TARGET?HOW CAN WE DO THAT?PLS EXPLAIN ME AND WHAT STAGES ARE THERE?WHAT LOGIC?

TCS,

1 6626

What is configuration your file structure 2)I have two databases both are Oracle while loading data from source to target the job takes 30 min but I want to load less time how?

Hexaware,

1 6358

In datastage can ve find the job based on source table name ??

TCS,

1 9467

write asql query to filter improper date format? date 20-apr 11-mar-2010 30-may-2010 feb-2009 i want the output date 11-mar-2010 30-may-2010

Accenture,

2 6763

write a sql query following table? col1 col2 1 2 1 2 1 2 3 4 3 4 5 6 i want the output like unique duplicate col1 col2 col1 col2 1 2 1 2 3 4 1 2 5 6

Cap Gemini,

1 3488

wtite sql query following table are city gender no chennai male 40 chennai female 35 bangalore male 10 bangalore female 25 mumbai female 15 i want the output? city male female chennai 40 35 bangalore 10 25 mumbai null 15

Bank Of America,

3 7607


Un-Answered Questions { Data Warehouse }

What are the data types present in bo? What happens if we implement view in the designer and report?

1037


What is the purpose of cluster analysis in data warehousing?

1019


Hi all , I am planning for informatica S - PowerCenter 8 Mapping Design certification. I have rewuired the dumps for the same. if anyone of you having the same pl. share it with me. This will be of great help. My contact is : sagardev7@gmail.com TIA , Sagar

2758


What is SAS informats?

1114


Explain connectivity between datastage with datasources?

994


Can you execute macro within another macro? If so, how would sas know where the current macro ended and the new one began? : sas-macro

1210


What are the functions involved in shared information architecture?

1084


how to construct simple biogas digerter? please show me detail drawing and specification of simple biogas construction?

2470


what is the difference between cubes and package in cognos

4964


if i hv 6 table as source table but can i make 12 as a dim table and 6 as fact table belongs to that src table.

2214


Mention the category in which sas informats are placed?

1029


What is level prompt?

970


Explain rw document?

1108


-----------------What is Determination Model?

2148


List the logical and conditional operators that are used with teradata along with their meanings?

1010