Understanding Data Types and Modelling

Front

What is a data type in programming?

Back

A classification that specifies which type of value a variable can hold

Front

Which of the following is a primitive data type in most programming languages?

String

,

Array

,

Object

,

Integer

Back

Integer

Front

Which technique is commonly used to generate synthetic data for testing purposes?

Back

Data simulation

Front

What is the primary purpose of data modelling?

Back

To organise and structure data

Front

In an Entity-Relationship Diagram (ERD), what does a rectangle represent?

Back

An entity

Front

Which of the following is a popular data modelling tool?

Microsoft Word

,

Adobe Photoshop

,

MySQL Workbench

,

Google Chrome

Back

MySQL Workbench

Front

What is the difference between a float and an integer data type?

Back

Floats can store decimal numbers, integers cannot

Front

Which data generation technique involves using existing data to create new data? Options:

Data augmentation

,

Data encryption

,

Data deletion

,

Data compression

Back

Data augmentation

Front

What is a key concept in data modelling that involves defining relationships between data entities?

Back

Data normalisation

Front

In an ERD, what does a diamond shape represent?

Back

A relationship