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IBM Data Warehouse General Interview Questions
Questions Answers Views Company eMail

Difference between DSS & OLTP?

6 51315

Hierarchy of DWH?

2 18933

What is surrogate key?

5 22237

What are Fact tables and Dimension Tables?

6 56962

What is META DATA information in Data warehousing projects?

2 7280

When should one use an MD-database (multi-dimensional database) and not a relational one?

2 8727

what is the difference between DSS and ODS ?

2 18614

what is table partitioning? How it is useful to warehouse database?

1 8407

explain the ROLLUP, CUBE, RANK AND DENSE_RANK FUNCTIONS OF ORACLE 8I

3 16216

Hi, Could any one tell me which schema (star and snow flake schema) will take much space? Thanks S.A.K

6 11203

Tell me one example for multi valued dimension or bridge table?

2 18802

2.What is staging area ?

4 12354

4.Explain Snowflkeschema ?

6 11064

if we increase the number of dimensions will the rows in fact table increase or decrease??

3 9323

How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.

1 5440

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IBM Data Warehouse General Interview Questions


Un-Answered Questions

How to add extra html (i.e link) in zend_form?

167


What is the use of noconflict() method in jquery?

748


Net app interview questions ============================ . Storage Fundamentals: - what is Raid? What are different kind of Raids? - Difference between all of Raids , Advantage of one raid over other - What are FCP & ISCSI, Difference between them. - FC Topologies, Iscsi commands - How to mount a Lun on Windows/Linux - NFS and CIFS - Difference between SAN, NAS and DAS - Different Backup methodologies, Snapshot, mirror, Disaster Recovery, High Availability, Cluster concepts 2. Network Fundamentals: - TCP/IP and ISO/OSI layers - What is DHCP, DNS, SNMP, Router, Hub, Switch, HTTPS , HTTP, telnet , ssh, rsh - Different SNMP versions (V1, V2, V3) - SNMP traps - Ipv4 and Ipv6 addressing 3. Database: - SQL queries, Joins (may ask you to write queries with complex joins) - Aggregate functions - Schemas, Tables, views (create, delete, alter, drop etc) 4. Testing - Bug tracking process, Types of Bugs - Difference between priority and Severity of Bug - Your best bug , what will you do when your bug is not fixed/rejected etc. - What is Functionality/Sanity/Stress/Upgrade & revert/Performance/negative/Release test/regression tests. How you have done these in your past projects. - Black box testing, grey box testing - May ask to write test cases on a given scenario - What is test plan and test summary/strategy document. Different sections in these documents. - SDLC, Test Lifecycle and approach to test a product (Given a product what different kind of testing you will do) 5. Perl ( in addition, you may be asked to write scripts on below areas) - Regular expressions - File/Directory Handling - Scalars, Arrays and Hashes - Packages and Modules - Use and require statements - Go through Net::Telnet, Net::SNMP, Net::SSH modules in perl

2948


How can we embed Video in HTML 5?

769


What is java lang string?

915


What is a abap/4 module pool?

1009


What are the functions of the personnel administration module?

878


How to open a new form on button click in Windows forms?

885


What are the report types?

383


Tell me are you comfortable making cold calls here? : insurance cold calling

486


How to get the actual path of servlet in server?

1133


what is throws keyword

3554


Can two jms servers share the same persistent store?

750


What is an ajax request and what is a simple example of where a ajax request would be used?

827


What is the difference between local and central version operating modes?

1224