Data types and database setup in No-Code - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Data Types in Databases

Which of the following data types is best suited to store a person's full name in a database?

A Text/String

B Boolean

C Integer

D Date

💡 Hint

Think about what kind of information a name contains.

Names are made up of letters and sometimes spaces, so a text or string data type is appropriate.

📋 Factual

intermediate

Choosing the Right Data Type for Age

What is the most suitable data type to store a person's age in a database?

A Float

B Text/String

C Integer

D Date

💡 Hint

Age is a whole number without decimals.

Age is a whole number, so integer is the best choice.

🚀 Application

advanced

Setting Up a Database Table for Employee Records

You want to create a database table to store employee records including their ID, name, date of birth, and employment status (active or inactive). Which data types should you assign to each field?

A ID: Date, Name: Boolean, Date of Birth: Text, Employment Status: Integer

B ID: Text, Name: Integer, Date of Birth: Text, Employment Status: Integer

C ID: Boolean, Name: Text, Date of Birth: Integer, Employment Status: Text

D ID: Integer, Name: Text, Date of Birth: Date, Employment Status: Boolean

💡 Hint

Consider what kind of data each field holds.

Employee ID is a number, name is text, date of birth is a date, and employment status is true or false (Boolean).

🔍 Analysis

advanced

Analyzing Data Type Choices for Storing Prices

Which data type is most appropriate for storing product prices in a database to avoid rounding errors?

A Decimal

B Float

C Integer

D Text/String

💡 Hint

Think about precision and accuracy for money values.

Decimal data type stores exact numbers with fixed decimal points, avoiding rounding errors common with floats.

❓ Reasoning

expert

Deciding on Data Types for a Mixed-Content Field

You have a database field that needs to store either a number or the word 'unknown' when the number is not available. Which data type should you choose?

A Boolean

B Text/String

C Integer

D Date

💡 Hint

Consider the need to store both numbers and words in the same field.

Since the field must hold both numbers and text, a text/string data type is necessary to accommodate all values.