One-to-many relationships in No-Code - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to describe a one-to-many relationship.

No-Code

In a one-to-many relationship, one [1] can be linked to many [2].

Drag options to blanks, or click blank then click option'

Acustomer

Border

Cproduct

Demployee

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'order' because it is many, but the question asks for the one side.

Confusing product or employee as the one side.

In a one-to-many relationship, one customer can have many orders. This means one entity on one side relates to multiple entities on the other side.

2fill in blank

medium

Complete the sentence to explain the direction of a one-to-many relationship.

No-Code

In a one-to-many relationship, the 'one' side is called the [1], and the 'many' side is called the [2].

Drag options to blanks, or click blank then click option'

Achild

Bparent

Cowner

Ddependent

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'child' for the one side instead of the many side.

Using 'owner' or 'dependent' which are less common terms here.

The 'one' side is often called the parent, and the 'many' side is called the child. This helps us understand which entity controls or owns the relationship.

3fill in blank

hard

Fix the error in this description of a one-to-many relationship.

No-Code

In a one-to-many relationship, one [1] can have many [2].

Drag options to blanks, or click blank then click option'

Aorder

Bproduct

Ccustomer

Demployee

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'order' which reverses the relationship.

Confusing product or employee as the one side.

The correct statement is: one customer can have many orders. Saying one order belongs to many customers (or similar reversal) is incorrect.

4fill in blank

hard

Fill both blanks to complete the example of a one-to-many relationship.

No-Code

A [1] can have many [2], but each [2] belongs to only one [1].

Drag options to blanks, or click blank then click option'

Ateacher

Bstudent

Cclass

Dschool

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping teacher and student roles.

Choosing class or school which are not the direct entities in this example.

A teacher can have many students, but each student belongs to only one teacher in this example. This shows the one-to-many relationship clearly.

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension representing a one-to-many relationship.

No-Code

assignments = { [1]: [[2]] for [3] in teachers }

Drag options to blanks, or click blank then click option'

Ateacher

Bstudent1, student2

Dclassroom

Attempts:

3 left

💡 Hint

Common Mistakes

Using classroom as a key or loop variable which is unrelated here.

Not using a list for the many side.

This dictionary comprehension creates a mapping where each teacher is a key, and the value is a list of students like student1, student2. The loop variable is also teacher.