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Find a Question:
Data-Modeling
Why are recursive relationships are bad? How do you resolve them?
Why are recursive relationships are bad? How do you resolve them? '
When should you consider denormalization?
When should you consider denormalization? '
What is the difference between star flake and snow flake schema?
What is the difference between star flake and snow flake schema? '
What is the difference between logical data model and physical data model in Erwin?
What is the difference between logical data model and physical data model in Erwin? '
What is the difference between hashed file stage and sequential file stage in relates to DataStage Server?
What is the difference between hashed file stage and sequential file stage in relates to DataStage Server? '
What is second normal form ?
What is second normal form ? '
What is First Normal Form ?
What is First Normal Form ? '
What is data sparsity and how it effect on aggregation?
What is data sparsity and how it effect on aggregation? '
What is an artificial (derived) primary key? When should it be used?
What is an artificial (derived) primary key? When should it be used? '
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