One-to-many relationships in No-Code - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the basic concept of one-to-many relationships

In a one-to-many relationship, one item in a group is connected to many items in another group. Which of the following real-life examples best illustrates a one-to-many relationship?

A Many students attend one class.

B One student has one ID card.

C A single author writes many books.

D Many cars are parked in many parking spots.

💡 Hint

Think about which example shows one thing linked to many others.

One author writing many books shows one-to-many because one author is connected to many books. The other options do not clearly show one-to-many.

📋 Factual

intermediate

Identifying one-to-many relationships in databases

Which of the following database table relationships is an example of a one-to-many relationship?

A One customer can place many orders.

B Many employees share one office.

C One product has one price.

D Many students have many courses.

💡 Hint

Look for the option where one record relates to multiple records in another table.

One customer placing many orders means one record in the customer table relates to many records in the orders table, which is a one-to-many relationship.

🚀 Application

advanced

Applying one-to-many relationships in organizing data

You are organizing a music library. You want to link each artist to their albums. Which structure best represents a one-to-many relationship?

A Each album linked to multiple artists.

B Each song linked to multiple albums.

C Each album linked to one song.

D Each artist linked to multiple albums.

💡 Hint

Think about who creates many albums.

An artist can create many albums, so linking each artist to multiple albums is a one-to-many relationship.

🔍 Analysis

advanced

Analyzing relationship types in a school system

In a school system, students enroll in classes. Which statement correctly describes the relationship between students and classes if each student can enroll in many classes but each class has many students?

A Many-to-many between students and classes.

B One-to-many from students to classes.

C Many-to-one from classes to students.

D One-to-one between students and classes.

💡 Hint

Consider that both sides can have many connections.

Since each student can enroll in many classes and each class has many students, this is a many-to-many relationship, not one-to-many.

❓ Reasoning

expert

Determining the correct relationship type from a scenario

A library system tracks books and authors. Some books have multiple authors, and some authors write multiple books. What type of relationship exists between books and authors?

A One-to-one between books and authors.

B Many-to-many between books and authors.

C One-to-many from authors to books.

D Many-to-one from books to authors.

💡 Hint

Think about whether one book or author can connect to many of the other.

Because books can have multiple authors and authors can write multiple books, the relationship is many-to-many.