Data Warehouse General Interview Questions
Questions Answers Views Company eMail

What is an error log table in informatica occurs and how to maintain it in mapping?

620

What is static and local variable?

623

What is the main difference between schema in rdbms and schemas in datawarehouse?

616

What is surrogate key? Where we use it explain with example?

538

Explain can a dimension table contains numeric values?

621

What is crass reference table?

661

What is a fact, dimension, measure?

623

Explain difference between e-r modeling and dimentional modeling?

626

Explain the definition of normalized and denormalized view and what are the differences between them?

568

Explain the definition of normalized and denormalized view?

577

Explain why fact table is in normal form?

590

What are situations where snow flake schema is better than star schema to use and when the opposite is true?

590

Explain dimensional modelling?

591

What is batch processing?

658

What is aggregate fact table?

597


Post New Data Warehouse General Questions

Un-Answered Questions { Data Warehouse General }

for data loading in oracle, what are conventional loading , what are conventional loading and direct-path loading?

1731


Start a batches with in a batch?

599


How to generate the cubes in framework manager?

602


Explain is fact table?

570


Explain techniques of error handling - ignore , rejecting bad records to a flat file , loading the records and reviewing them (default values)?

581






Why null values are mapped as 0 in fact tables?

599


Explain what is the difference between power center & power mart?

587


What is the difference between aggregate table and materialized view?

660


How are models actually derived?

1607


What is a general purpose scheduling tool?

619


What is metadata in context of a datawarehouse?

607


Is union transormation is active transformation?

642


I need to set predefined condition. How I do this?

568


How to reduce warnings?

587


What are the fundamental elements of the data warehouse?

560