Database in everyday apps (social media, banking) in Intro to Computing - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a database in the context of everyday apps like social media or banking?

A database is a digital storage system that keeps all the information an app needs, like user profiles, posts, or transactions, organized and easy to find.

beginner

How does a social media app use a database?

It stores user details, friends lists, posts, comments, and likes so the app can quickly show your feed and let you interact with others.

intermediate

Why is data security important in banking databases?

Because banking databases hold sensitive information like account numbers and balances, protecting this data prevents theft and fraud.

beginner

What is a real-world analogy for a database in an app?

Think of a database like a well-organized filing cabinet where each drawer holds different types of information, making it easy to find what you need quickly.

beginner

How do apps keep databases updated with new information?

Apps send new data to the database whenever you post, send money, or update your profile, so the database always has the latest info.

What does a database do in a social media app?

A Creates new posts automatically

B Stores user posts and profiles

C Deletes old posts without permission

D Sends messages to friends

A database stores user posts and profiles so the app can display them when needed.

Why must banking databases be secure?

A To prevent unauthorized access to sensitive data

B To make the app run faster

C To allow anyone to see account balances

D To store pictures and videos

Security protects sensitive banking data from theft or fraud.

Which of these is a good analogy for a database?

A A messy desk with papers everywhere

B A broken computer

C A blank notebook

D A well-organized filing cabinet

A database is like a well-organized filing cabinet that stores information neatly.

How do apps update their databases?

A By printing data on paper

B By deleting all old data daily

C By sending new data when users interact

D By ignoring user actions

Apps update databases by sending new data whenever users post or make changes.

What kind of information would a banking app store in its database?

A User account numbers and transaction history

B User favorite movies

C Weather forecasts

D Social media posts

Banking apps store account numbers and transaction history to manage finances.

Explain how a database supports a social media app in managing user data and interactions.

Think about what happens when you post or comment on social media.

Describe why data security is crucial in banking databases and how it protects users.

Consider what could happen if someone steals your bank details.