Range is one of the simplest techniques of descriptive statistics. It is the difference between lowest and highest value.

What is Data Modeling Development Cycle?

The main goal of a designing data model is to make certain that data objects offered by the functional team are represented accurately.

Why are recursive relationships are bad? How do you resolve them?

When should you consider denormalization?

What is the difference between hashed file stage and sequential file stage in relates to DataStage Server?

What is data sparsity and how it effect on aggregation?

What is Dimensional Modeling?

What is Hash Table Collision?

various steps involved in the data analysis process are:Data Exploration Data PreparationData Modelling Validation Implementation of the Model and Tracking

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