Data Warehousing Concepts Quiz
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Questions and Answers

What is the main focus of the tutorial on Data Warehousing?

  • Comparing different data warehouse architectures
  • Providing a historical overview of data warehousing
  • Explaining all necessary concepts of data warehousing (correct)
  • Analyzing the impact of data warehousing on decision making

What is the purpose of a data warehouse?

  • Storing only structured data for future reference
  • Facilitating real-time transaction processing
  • Serving as a backup for operational databases
  • Supporting analytical reporting, structured and/or ad hoc queries, and decision making (correct)

What is the primary function of a data warehouse?

  • Managing structured and unstructured data equally
  • Executing real-time operational processes
  • Serving as a primary storage for transactional data
  • Integrating data from multiple heterogeneous sources (correct)

What is one of the key topics covered in the Data Warehouse syllabus?

<p>Partitioning Strategy (A)</p> Signup and view all the answers

Who is the Research Instructor for the Data Warehouse subject?

<p>Prof. Dr. Murtadha M. Hamad (C)</p> Signup and view all the answers

Who invented the Playfair cipher?

<p>Charles Wheatstone</p> Signup and view all the answers

What type of substitution cipher is the Playfair cipher?

<p>literal digram</p> Signup and view all the answers

Why is the Playfair cipher significantly harder to break than simple substitution ciphers?

<p>Frequency analysis used for simple substitution ciphers does not work with it</p> Signup and view all the answers

What was significant about the Playfair cipher in cryptologic history?

<p>It was the first cipher to encrypt pairs of letters</p> Signup and view all the answers

What is the main difference between the Playfair cipher and the Vigenère cipher systems?

<p>Playfair encrypts pairs of letters, while Vigenère encrypts single letters</p> Signup and view all the answers

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