Data Warehouse Interview Questions
Questions Answers Views Company eMail

Explain usage analysis in datastage?

651

What is size of a transaction and an array means in a datastage?

737

How many types of views are there in a datastage director?

832

Why we use surrogate key?

697

Define oconv () and iconv () functions in datastage?

877

Name the third party tools that can be used in datastage?

611

Define ds designer?

766

Differentiate between odbc and drs stage?

593

How do you find the number of rows in a sequential file?

1 916

Why do we use link partitioner and link collector in datastage?

679

How can one find bugs in job sequence?

782

Differentiate between operational datastage (ods) and data warehouse?

672

Differentiate between datastage and datastage tx?

591

Why does microstrategy object manager search for object dependencies?

596

What is level metrics in microstrategy?

570


Un-Answered Questions { Data Warehouse }

Do you think effective communication is necessary for data processing? What is your strength in terms of same?

659


What is the procedure for creating independent data marts from informatica 7.1?

562


We can use a calculated field to dynamically create the burst recipients in Cognos 8. Can we do the same in Cognos ReportNet 1.1?

2082


What Is Snow Flake Schema?

666


Mention the procedure via which, we can run Teradata jobs in a UNIX environment.

566






Can we create multiple integration service on single repository?

695


What is informatica? Why do we need it?

636


What is the use of dimensional modeling in data warehousing?

536


Explain what is the architecture of abinitio?

668


What is a pre-defined event and user-defined event?

577


On which transformations you created partitions in your project?

760


46.How you can create cross joined output using join component ? 47.What is the default layout of watcher files ? How to use in abinitio graph? 48.Why you get 'too many open files' error ? How to use in abinitio graph? 49.What is the significance of vnode folder under AB_WORK_DIR ? How to use in abinitio graph? 50, What is the significance AB_AIR_BRANCH? How to use in abinitio graph? 51. How can you select only unique records from a set of records ? How to use in abinitio graph? 52. How next_in_sequence work in parallel layout ? How to use in abinitio graph? 53. Why you want to set a modest number in limit ? How to use in abinitio graph? 54. How you can encrypt a password and use it in dbc file? How to use in abinitio graph? 55. Which function you should be using if you do not want to process non printable char from a feed file ? How to use in abinitio graph? 56. How you can run a component for certain conditions ? How to use in abinitio graph? 56. What is catalog and when you should use it ? How to use in abinitio graph? 57. How you can use reformat as a router ? How to use in abinitio graph? 58. How many process gets created for a n-way parallel component ? How to use in abinitio graph? 59. Why delimited DMLs take more time to process than fixed length DMLs? How to use in abinitio graph? 60. How can you select only first and last record from a file without using next_in_sequence? How to use in abinitio graph? 61.Why you should always keep largest input as driving input for Join ? How to use in abinitio graph? 62. What a catalog file contains ? How to use in abinitio graph? 63. What Is private project and public project ? How to use in abinitio graph? 64. Why you should not use checkpoint after replicate ? How

5211


What is is a data flow graph?

670


Give a justifiable reason why Multi-load supports NUSI instead of USI.

672


what are passthrough functions?

496