Data warehouse testing interview questions

  • What are the interview questions for ETL testing?

    ETL Testing Interview Questions for Freshers

    1. What is ETL?
    2. Explain what are the ETL testing operations includes?
    3. Mention what are the types of data warehouse applications and what is the difference between data mining and data warehousing?
    4. What are the various tools used in ETL?
    5. What is fact?

  • What is system testing in data warehouse?

    Evaluating Cloud Data Warehouses: 10 criteria to Consider

    1. Performance at Scale
    2. Elasticity
    3. Ease of Use
    4. Cost Efficiency
    5. Supports Structured and Semi-Structured Data
    6. Concurrency
    7. Data Granularity
    8. Deployment Options

  • Let's dive in

    Step 1: gather and analyze requirements.Step 2: define the testing scope.
    Extraction.
    Transformation.
    Loading.Step 3: design test cases.Step 4: set up the testing environment.Step 5: execute test cases.Step 6: verify test results.Step 7: report and document findings.The limits of data warehouse testing.
  • Moreover, the data warehouse testing strategy involves two key testing elements- ETL and business intelligence (BI) testing.
    The ETL testings assess the system's extraction, transformation, and loading processes.
    On the other hand, BI testing checks the accuracy of BI reports and dashboards.
Data Warehouse Interview Questions and Answers
  • What is a Data Warehouse?
  • What is Data Mining?
  • What is the difference between Data Warehousing and Data Mining?
  • What is Data Transformation?
  • What is the difference between a Database and a Data Warehouse?
  • Why do we need a Data Warehouse?
Data Warehouse Interview Questions
  • What is an aggregate table in Data warehouse?
  • What do you understand by metadata in Data warehouse?
  • Define ER diagram in data warehousing.
  • Name the approaches used by the optimizer during the execution plan.
  • What do you understand by Star Schema?

What is data warehousing & business intelligence?

And seeing the statistics on the information itself is beneficial

Data warehousing and business intelligence are concepts used to characterize the method of storing all of the company’s data in internal or external databases from different sources to analyze it and produce actionable information through online BI software

Why do you need a data warehouse?

A Data Warehouse enables you to capture and handle data, which can then provide valuable market insights

At Jigsaw, we believe in nurturing potential and helping students achieve their long-term career goals

With these advanced Data Warehouse interview questions, you can prepare well in time to ace that interview!

8 Key Data Warehouse Interview Questions And Answers

  • 1. Explain your experience with extract, transform and load (ETL) processes. ...
  • 2. How do you design and implement data warehouses? ...
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Data Warehouse Interview Questions

  • 1. What is the significant difference between the data warehouse and the database? ...
  • 2. How do you design a data warehouse schema for an extensive, complex data set? ...
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