Homework Help is Here – Start Your Trial Now!
Engineering
Computer Science
In Entity-relationship modelling what is the mapping for the following: Bookshops may have more than one customer and customers may purchase from several bookshops.     a. 1:1     b. a)      1:M     c. a)      M:M     d. All of the above     Which of the two classes of operations are time-series databases optimised for? (This question has multiple answers.)   a.        Creating data     b. Updating data     c. Deleting data     d. a)    Reading data

In Entity-relationship modelling what is the mapping for the following: Bookshops may have more than one customer and customers may purchase from several bookshops.     a. 1:1     b. a)      1:M     c. a)      M:M     d. All of the above     Which of the two classes of operations are time-series databases optimised for? (This question has multiple answers.)   a.        Creating data     b. Updating data     c. Deleting data     d. a)    Reading data

Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter2: Data Models
Section: Chapter Questions
Problem 21RQ
See similar textbooks
icon
Related questions
Question

  1. In Entity-relationship modelling what is the mapping for the following:

    Bookshops may have more than one customer and customers may purchase from several bookshops.

     

      a.

    1:1

     
      b.

    a)      1:M

     
      c.

    a)      M:M

     
      d.

    All of the above

     

     

    1. Which of the two classes of operations are time-series databases optimised for? (This question has multiple answers.)

        a.

             Creating data

       
        b.

      Updating data

       
        c.

      Deleting data

       
        d.

      a)    Reading data

       
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Software Development Approaches
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781305627482
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Fundamentals of Information Systems
Fundamentals of Information Systems
Computer Science
ISBN:
9781337097536
Author:
Ralph Stair, George Reynolds
Publisher:
Cengage Learning
Principles of Information Systems (MindTap Course…
Principles of Information Systems (MindTap Course…
Computer Science
ISBN:
9781285867168
Author:
Ralph Stair, George Reynolds
Publisher:
Cengage Learning
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781285196145
Author:
Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:
Cengage Learning
Principles of Information Systems (MindTap Course…
Principles of Information Systems (MindTap Course…
Computer Science
ISBN:
9781305971776
Author:
Ralph Stair, George Reynolds
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS