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12th Standard Computer Science Database Concepts English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021

12th Standard

    Reg.No. :
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Computer Science

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. A table is known as

    (a)

    tuple

    (b)

    attribute

    (c)

    relation

    (d)

    entity

  2. Who is called Father of Relational Database from the following?

    (a)

    Chris Date

    (b)

    Hugh Darween

    (c)

    Edgar Frank Codd

    (d)

    Edgar Frank Cadd

  3. What symbol is used for SELECT statement?

    (a)

    σ

    (b)

    Π

    (c)

    X

    (d)

    Ω

  4. Which of the following is an organized collection of data, which can be stared and a cersed through computer system

    (a)

    Database

    (b)

    Worksheet

    (c)

    DBMS

    (d)

    Information

  5. In which of the following data organized in a way that, it can be easily accessed, managed and updated?

    (a)

    Database

    (b)

    DBMS

    (c)

    Structure

    (d)

    Object

  6. Which of the following provided an interface to perform various operations to create a database, storing and updating data?

    (a)

    SQL

    (b)

    DBA

    (c)

    DBMS

    (d)

    Algebra

  7. In which database mode, the relationship are created by dividing the object into entity?

    (a)

    ER-model

    (b)

    Object

    (c)

    Hierarchical

    (d)

    Network

  8. Which data model used in file management system?

    (a)

    ER model

    (b)

    Relational

    (c)

    Hierarchical

    (d)

    None of these

  9. Find the odd man out

    (a)

    SQLite

    (b)

    Maria DB

    (c)

    Oracle

    (d)

    Dbase

  10. Expansion of SQL is

    (a)

    Structured Question Language

    (b)

    Selection Query Language

    (c)

    Structured Query Language

    (d)

    Structured Query Language

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