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Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Year 9 MCQ


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10 Questions MCQ Test - Test: Big Data Modelling and Analysis: Databases and Spreadsheets

Test: Big Data Modelling and Analysis: Databases and Spreadsheets for Year 9 2024 is part of Year 9 preparation. The Test: Big Data Modelling and Analysis: Databases and Spreadsheets questions and answers have been prepared according to the Year 9 exam syllabus.The Test: Big Data Modelling and Analysis: Databases and Spreadsheets MCQs are made for Year 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Big Data Modelling and Analysis: Databases and Spreadsheets below.
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Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 1
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What is one characteristic of big data that differentiates it from traditional data?

Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 1
Big data is characterized by its high volume, which refers to the large amount of data generated and stored.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 2
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Which of the following is a common technique used in data modeling?

Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 2
Entity-Relationship (ER) modeling is a common technique used to create a conceptual framework for data modeling by defining the entities and their relationships.
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Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 3
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What does the 'velocity' aspect of big data refer to?

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The 'velocity' aspect of big data refers to the speed at which data is generated, processed, and analyzed in real-time or near real-time.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 4
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Which database management system is commonly used for big data analytics?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 4
Hadoop is a popular database management system used for big data analytics due to its ability to handle large datasets and perform distributed processing.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 5
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In data modeling, what is a primary key?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 5
A primary key is a unique identifier for a record in a table, ensuring that each record can be uniquely identified.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 6
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How does a relational database store data?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 6
A relational database stores data in tables with rows and columns, allowing for organized storage and easy retrieval of data.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 7
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Which data modeling technique involves creating a graphical representation of data and its relationships?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 7
An ER (Entity-Relationship) diagram is a graphical representation of data and its relationships, used in data modeling to visualize the structure of the database.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 8
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What is the purpose of using databases for data management in big data?
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The purpose of using databases for data management in big data is to organize, store, and retrieve large amounts of data efficiently, enabling effective data analysis and decision-making.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 9
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Which of the following is an example of a NoSQL database commonly used in big data applications?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 9
MongoDB is a NoSQL database commonly used in big data applications for its flexibility in handling unstructured data.
Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 10
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What is data normalization in the context of data modeling?
Detailed Solution for Test: Big Data Modelling and Analysis: Databases and Spreadsheets - Question 10
Data normalization is the process of reducing data redundancy and improving data integrity by organizing data into related tables and ensuring that dependencies are properly enforced.
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