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Data Warehouse Interview Questions
Questions Answers Views Company eMail

Explain about cumulative Sum or moving sum?

Informatica,

1 1098

Explain lookup transformation source types in informatica

Informatica,

1 1179

What is a transaction control transformation?

Informatica,

1 1283

Define mapping and session?

Informatica,

1 1110

Design a mapping to load the cumulative sum of salaries of employees into target table?

Informatica,

1 1575

How to create or import flat file definition in to the warehouse designer?

Informatica,

1 1156

What are ETL Tools?

Informatica,

1 1196

What are the types of data warehouses?

Informatica,

1 1603

How to partition the Session?

Informatica,

1 1181

How to create Target definition for flat files?

Informatica,

1 1299

How do you handle two sessions in Informatica

Informatica,

1 1231

What are the guidelines to be followed while using union transformation?

Informatica,

1 1228

Which transformation should we use to normalise the COBOL and relational sources?

Informatica,

1 1300

How to create different types of slowly changing dimensions (SCD) in informatica using the mapping wizard?

Informatica,

1 1144

What is aggregate cache in aggregator transformation?

Informatica,

1 1222


Un-Answered Questions { Data Warehouse }

explain in detail about type 3?

1083


How do you remove duplicate records in informatica? And how many ways are there to do it?

1231


Hi, If anyone has base SAS certification dumps, please share.

1936


Write the unconnected lookup syntax and how to return more than one column.

1174


What is a rollup component? Explain about it.

1241


what are the dimensions that you have in your current project?list them?

2093


Hi, If anyone has TD 14 Basics dumps or study materials, please share. nirmaaal1991@gmail.com

2492


Write the unconnected lookup syntax?

1146


can anybody send me some real time screenshots of mapping in informatica powercenter. i will be vary thankful to him. my e-mail id :- prakashkumar.kumhar@gmail.com

4796


What is aggregate table and aggregate fact table ... Any examples of both?

1118


Source has 2 columns: USA,NewYork INDIA,MUMBAI INDIA,DELHI UDS,CHICAGO INDIA,PUNE i want data in target like below: INDIA,MUMBAI1 INDIA,DELHI2 INDIA,PUNE3 USA,NEWYORK1 USA,CHICAGO2

846


What is dimensional table? Explain the different dimensions.

1267


create a job that splits the data in the Jobs.txt file into four output files. You will direct the data to the different output files using constraints. • Job name: JobLevels • Source file: Jobs.txt • Target file 1: LowLevelJobs.txt − min_lvl between 0 and 25 inclusive. − Same column types and headings as Jobs.txt. − Include column names in the first line of the output file. − Job description column should be preceded by the string “Job Title:” and embedded within square brackets. For example, if the job description is “Designer”, the derived value is: “Job Title: [Designer]”. • Target file 2: MidLevelJobs.txt − min_lvl between 26 and 100 inclusive. − Same format and derivations as Target file 1. • Target file 3: HighLevelJobs.txt − min_lvl between 101 and 500 inclusive. − Same format and derivations as Target file 1. • Rejects file: JobRejects.txt − min_lvl is out of range, i.e., below 0 or above 500. − This file has only two columns: job_id and reject_desc. − reject_desc is a variable-length text field, maximum length 100. It should contain a string of the form: “Level out of range: ”, where is the value in the min_lvl field. My Question is how do you write the stage variable for reject rows.

2811


Explain in detail about scd type 1 through mapping.

1646


Hi I need real time senarios and how to explain project in the interview pls let me know my email id m.n.prathyusha@gmail.com.Please help me out with this pls pls pls muthireddi@gmail.com

2207