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ETL Assessments for ETL Developer

Topics Covered

  • Data Reduction
  • Data Mining Process
  • Data Integration and Transformation 
  • Data Modeling Techniques
  • Database Lifecycle
  • Data Objects DataStage Engine
  • Aggregate Stage
  • DataStage Functions
  • Data Mining
  • Data Modeling
  • Data Warehouse
  • Data Stage

Useful for hiring

  • ETL Data warehouse Application Developer
  • ETL Developer
  • ETL Analyst

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Question

Which of the following is a relationship?

Answer
    • A person, place, or thing

    • Property or characteristic of an entity

    • Link between entities

    • Weak entity

Question

Which of the following is true for three-tier data warehouses?

Answer
    • Once created, the data marts will keep on being updated from the data warehouse at periodic times

    • Once created, the data marts will directly receive their new data from the operational databases

    • The data marts are different groups of tables in the data warehouse

    • A data mart becomes a data warehouse when it reaches a critical size

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