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Data Warehouse Interview Questions
Questions Answers Views Company eMail

What are the different methods ot loading a dimension table? A fact table etc?

1053

What are default access rights in teradata?

1147

Explain teradata utilities?

1056

What is spool space?

1168

How do you create tables? Exact syntax, and create profiles, users in teradata?

1051

What tools would you use for that?

1124

In general, how do you optimze any sql in teradata?

1053

What are the various indexes in teradata? How to use them? Why are they preferred?

1077

How do you do backup and recovery in teradata?

1041

Explain the teradata primary index mechanics in detail with a diagram.

991

Explain and compare pros and cons of start schemas?

1092

How to stop/start redshift cluster?

1

What are key differences between sql server and amazon redshift?

1

How do we execute sql file on redshift?

1

Explain the architecture of amazon redshift?

1


Un-Answered Questions { Data Warehouse }

I have 7500 rows. I need all rows in single reports. Which type of prompt we have used retrieving all rows and show in a report? We have dynamical queries q1, q2, q3, q4, q5. If customer selects the particular, query that only show in execution report. In case it may more then one, how do you execute the particular query item in report page? What are the difference bt OLDP and OLAP?

2085


I have 3 years of work experience at a startup and recently got certified in Data Science with SAS. I need to know how to get into the analytics industry

1775


explain abt ur project architecture?

2205


Can we create Hierarchies in generic datasources?

2397


Please send me BO certification details and question papers? this is my mail id: valsreenivas@gmail.com

2413


In development project what is the process to follow for an etl developer from day1

1731


Can microstrategy desktop access operational data systems?

1081


What is the flow of loading data into fact & dimensional tables?

1079


How online/offline mode impact development and delpoyment?

841


How to generate sequence numbers using expression transformation?

1103


What are default access rights in teradata? What explicit right can be given to a user?

1120


Have you used rollup component? Describe how.

1084


Hello, I have PROC SQLs results group by 3 fields and I use SUM and COUNT functions in SQL. The problem is when I try to display my result with PROC TABULATE. I am getting very big numbers. I believe I make a mistake some where in Tabulate. Here is my Proc Tabulate. PROC TABULATE DATA=OUT04_05 FORMAT=12.; CLASS YR CENTRE VISA / PRELOADFMT EXCLUSIVE; VAR NEWUSER FRAUD TRANSFER AUTUSER REISSUE; TABLE CENTRE ALL, (YR ALL)*VISA, (NEWUSER*F=COMMA12. AUTUSER*F=COMMA12. FRAUD*F=COMMA12. TRANSFER*F=COMMA12. REISSUE*F=COMMA12.) / MISSTEXT={LABEL='0'} PRINTMISS RTS=20; FORMAT VISA VISAFMT.; KEYLABEL SUM = ' ' ALL = 'TOTAL'; LABEL YR = 'DATE YEAR' NEWUSER = 'TOTAL NEW ACCT' TRANSFER = 'TOTAL TRANSFER' FRAUD = 'TOTAL FRAUD TRANSFER' AUTUSER = 'TOTAL AUTH USERS' REISSUE = 'TOTAL REISSUE'; When I code it like : NEWUSER*N*F=COMMA12. AUTUSER*N*F=COMMA12. I get same amount numbers but to find a NEWUSER I use COUNT(*) and to find AUTUSER I use SUM(xxxx) function so both result shouldn’t be the same my problem is in this point. Could you tell me where the problem in code is. How can I display my result? TX.

2282


How to find value from a column in a dataset?

2223


In Informatica,for the table I can find coreesponding dependent mappings.Likewise can I find the dependent jobs with all the information by using the table name

2494