DBMS Interview Questions
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is a valid replacement for the given SQL query?

  • SELECT name FROM instructor1 WHERE salary BETWEEN 90000 AND 100000;
  • SELECT name FROM instructor1 WHERE salary = 90000; (correct)
  • SELECT name FROM instructor| WHERE salary BETWEEN 90000 AND 100000;
  • SELECT name FROM instructor1 WHERE salary BETWEEN 100000 AND 90000;
  • What type of software is a Database Management System?

  • Utility software
  • Programming software
  • System software (correct)
  • Application software
  • What does the term 'FAT' stand for in the context of databases?

  • File Attribute Table
  • File Allocation Table (correct)
  • File Access Technology
  • Fast Access Table
  • Which of the following describes the maximum size supported by FAT?

    <p>2 TB (B)</p> Signup and view all the answers

    What does 'NTFS' refer to in the context of data storage?

    <p>New Technology File System (C)</p> Signup and view all the answers

    What is the primary purpose of a Database Management System?

    <p>Managing and organizing data (C)</p> Signup and view all the answers

    Which operation in a Database Management System involves querying, inserting, deleting, and modifying data?

    <p>Data manipulation (D)</p> Signup and view all the answers

    In SQL, what can replace the given query 'SELECT name, course_id FROM instructor, teaches WHERE instructor_ID = teaches_ID;'?

    <p>'SELECT name, course_id FROM instructor INNER JOIN teaches ON instructor_ID = teaches_ID;' (D)</p> Signup and view all the answers

    Which type of relationship is defined as 'one to many' in a Database Management System?

    <p>Each record in the first table can have multiple matching records in the second table. (D)</p> Signup and view all the answers

    In the SQL query 'SELECT emp_name FROM department WHERE dept_name LIKE '___ Computer Science';', what should be placed in the blank to select departments ending with 'Computer Science'?

    <p>'%Computer Science' (C)</p> Signup and view all the answers

    Study Notes

    Database Management System

    • A Database Management System is a type of software.

    SQL Queries

    • The query SELECT * FROM instructor ORDER BY salary ____, name ____ can be replaced with SELECT name FROM instructor1 WHERE salary BETWEEN 90000 AND 100000.
    • The query SELECT name, course_id FROM instructor, teaches WHERE instructor_ID= teaches_ID is used to query information from the database and insert tuples into, delete tuples from, and modify tuples in the database.

    Data Storage

    • The term "FAT" stands for File Allocation Table.
    • The maximum size that is supported by FAT is 4GB.
    • The term "NTFS" refers to New Technology File System.
    • The maximum size that is supported by NTFS is 256TB.

    Data Warehouse

    • A huge collection of information or data accumulated from several different sources is known as a data warehouse.
    • A data warehouse can be used to extract or filter the data and information from the data.

    Data Redundancy

    • Redundancy refers to the copies of the same data occupying the memory space at multiple places.

    Data Abstraction

    • Metadata refers to the data about data.
    • The physical level of data abstraction describes exactly how the data is actually stored.

    Database Administration

    • The term "DBA" refers to Database Administrator.

    File System

    • A file is a collection of all related data.
    • The term "Data" refers to the facts and statistics collected together for reference or analysis.

    Relational Database

    • Rows of a relation are known as tuples.
    • The number of tuples in a relation is called the cardinality of the relation.
    • An attribute is a column or field in a relational database.
    • The number of attributes in a relation is called the degree of the relation.

    SQL Commands

    • The INSERT command is a type of Data Manipulation Command.
    • The CREATE command is a type of Data Definition Language command.
    • The DELETE command is used to delete the existing row in a table.
    • The COMMIT command is used to save any transaction permanently into the database.

    Data Modeling

    • Top-down approach is a method in which the entity's higher level can be divided into two lower sub-entities.
    • Bottom-up approach is a method in which the multiple lower entities are grouped together to form a single higher-level entity.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Prepare for interviews with this set of multiple-choice questions on Database Management System (DBMS). Enhance your understanding of creating relation structures, querying capabilities, and more for various types of interviews and exams.

    More Like This

    Mastering DBMS
    5 questions

    Mastering DBMS

    SociableWilliamsite3411 avatar
    SociableWilliamsite3411
    DBMS Unit 1 Quiz
    10 questions

    DBMS Unit 1 Quiz

    FieryMalachite avatar
    FieryMalachite
    DBMS Flashcards
    53 questions

    DBMS Flashcards

    SharperEducation9982 avatar
    SharperEducation9982
    DBMS Exam 2 - Relational Algebra
    13 questions
    Use Quizgecko on...
    Browser
    Browser