True / False Exercise -database Concepts

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| By Aparnasunil75
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Aparnasunil75
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Quizzes Created: 20 | Total Attempts: 43,326
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  • 1/5 Questions

    A primary goal of a database system is to share data with multiple users

    • True
    • False
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About This Quiz

This True\/False exercise delves into fundamental Database concepts, assessing understanding of object properties, DBMS efficiency, data sharing, query constraints, and uniqueness of primary keys. It's designed to reinforce key database management skills, essential for IT and computer science students.

True / False Exercise -database Concepts - Quiz

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  • 2. 

    The primary key does not necessarily have to be unique for a given table.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because the primary key in a table must be unique. It is a unique identifier for each record in the table, ensuring that there are no duplicate values in the primary key column. This uniqueness is crucial for maintaining data integrity and allowing efficient data retrieval and updates.

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  • 3. 

    DBMS stores data efficiently with little wasted space

    • True

    • False

    Correct Answer
    A. True
    Explanation
    DBMS (Database Management System) is designed to efficiently store and manage data. It uses various techniques like data compression, indexing, and data normalization to minimize wasted space and optimize storage. By eliminating redundancy and organizing data efficiently, DBMS ensures that the storage space is used effectively, reducing the amount of wasted space. Therefore, the statement "DBMS stores data efficiently with little wasted space" is true.

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  • 4. 

    Multiple constraints can be included in a single query

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Multiple constraints can be included in a single query to filter and retrieve specific data from a database. These constraints can be applied to different columns or conditions within the query, allowing for more precise and targeted results. By including multiple constraints, it becomes easier to narrow down the data set and retrieve only the desired information. This can be especially useful when working with large databases or when trying to retrieve specific subsets of data based on various criteria.

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  • 5. 

    Properties of an object are stored as rows in a table

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement "Properties of an object are stored as rows in a table" is false. In a relational database, properties of an object are typically stored as columns in a table, where each row represents a separate instance or record of the object. Each column corresponds to a specific property or attribute, allowing for efficient storage, retrieval, and manipulation of data. Storing properties as rows would not align with the standard database design principles and would lead to inefficient data management.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 17, 2020
    Quiz Created by
    Aparnasunil75
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