Firebase vs AWS vs Supabase comparison - Practice Questions

Challenge - 5 Problems

🧠 Conceptual

intermediate

Key Feature Differences Between Firebase, AWS, and Supabase

Which cloud service primarily offers a real-time database with built-in synchronization for mobile and web apps?

A AWS

B Firebase

C Supabase

D All three offer this feature equally

💡 Hint

Think about which service is known for its real-time syncing database.

Firebase is well-known for its real-time database that syncs data instantly across clients, which is a core feature not equally matched by AWS or Supabase.

❓ Architecture

intermediate

Choosing a Backend for Serverless Architecture

You want to build a serverless app with managed authentication, database, and storage. Which service provides an all-in-one backend platform with minimal setup?

A AWS with separate services like Cognito, DynamoDB, and S3

B Self-hosted backend on a virtual machine

C Supabase with Postgres, Auth, and Storage

D Firebase with Authentication, Firestore, and Storage

💡 Hint

Look for the platform that bundles these backend services tightly with easy integration.

Firebase offers a tightly integrated backend with Authentication, Firestore database, and Storage services that require minimal setup, ideal for serverless apps.

❓ security

advanced

Security Model Differences

Which service uses PostgreSQL's Row Level Security (RLS) to control data access at a fine-grained level?

A Supabase

B AWS DynamoDB

C Firebase

D AWS S3

💡 Hint

Consider which service is built on top of PostgreSQL.

Supabase uses PostgreSQL and supports Row Level Security (RLS) to control access to data at the row level, providing fine-grained security.

❓ service_behavior

advanced

Behavior of Real-Time Data Sync

When a client updates data in Firebase Realtime Database, what happens to other connected clients?

A Other clients receive the updated data instantly without refreshing

B Other clients must manually refresh to see updates

C Data updates are queued and sent after 5 minutes

D Only the client that updated data sees the change

💡 Hint

Think about the meaning of 'real-time' in Firebase.

Firebase Realtime Database pushes updates instantly to all connected clients, enabling live synchronization without manual refresh.

✅ Best Practice

expert

Best Practice for Scaling Supabase vs AWS

You expect rapid growth and need a backend that scales automatically with minimal management. Which approach is best?

A Use Supabase with its managed Postgres and auto-scaling features

B Use AWS with manual scaling of EC2 instances and RDS databases

C Use AWS Lambda with managed services like DynamoDB and S3

D Use Supabase self-hosted on your own servers

💡 Hint

Consider which service offers fully managed serverless scaling.

AWS Lambda combined with managed services like DynamoDB and S3 provides automatic scaling without server management, ideal for rapid growth.

Practice

1. Which platform is best suited for quickly building apps with realtime data updates and simple backend requirements?

easy

A. Firebase

B. AWS

C. Supabase

D. None of the above

Solution

1. Step 1: Understand Firebase's main strength

   Firebase is designed for fast app development with realtime database and simple backend features.

2. Step 2: Compare with AWS and Supabase

   AWS is more complex and flexible, Supabase is open-source with SQL focus, but Firebase excels in realtime simplicity.

3. Final Answer:

   Firebase -> Option A

4. Quick Check:

   Realtime + simple backend = Firebase [OK]

Hint: Realtime + simple backend = Firebase [OK]

Common Mistakes:

• Confusing AWS as fastest for simple apps
• Thinking Supabase is best for realtime simplicity
• Assuming all platforms are equally simple

2. Which of the following is a correct statement about AWS compared to Firebase and Supabase?

easy

A. AWS is only for small projects with simple backend needs.

B. AWS offers powerful and flexible cloud services for complex projects.

C. AWS is an open-source SQL backend with realtime features.

D. AWS is mainly used for mobile app development with realtime database.

Solution

1. Step 1: Identify AWS's core purpose

   AWS provides a wide range of cloud services designed for large and complex projects requiring flexibility.

2. Step 2: Eliminate incorrect options

   "AWS is only for small projects with simple backend needs." is false because AWS handles complex projects; "AWS is mainly used for mobile app development with realtime database." describes Firebase; "AWS is an open-source SQL backend with realtime features." describes Supabase.

3. Final Answer:

   AWS offers powerful and flexible cloud services for complex projects. -> Option B

4. Quick Check:

   AWS = powerful + flexible for complex projects [OK]

Hint: AWS = powerful and flexible for complex projects [OK]

Common Mistakes:

• Thinking AWS is only for simple apps
• Mixing Supabase features with AWS
• Assuming AWS is mainly for realtime mobile apps

3. Given this description: "An open-source backend with SQL database and realtime features," which platform fits best?

medium

A. Supabase

B. AWS

C. Firebase

D. Google Cloud Functions

Solution

1. Step 1: Analyze the description keywords

   Open-source, SQL backend, and realtime features point to Supabase's main characteristics.

2. Step 2: Compare with other platforms

   Firebase is not open-source and uses NoSQL; AWS is not open-source and offers many services; Google Cloud Functions is serverless compute, not a backend database.

3. Final Answer:

   Supabase -> Option A

4. Quick Check:

   Open-source + SQL + realtime = Supabase [OK]

Hint: Open-source + SQL + realtime = Supabase [OK]

Common Mistakes:

• Confusing Firebase as open-source
• Thinking AWS is open-source SQL backend
• Mixing serverless functions with backend databases

4. You want to build a complex app with many cloud services and custom infrastructure. Which mistake would cause problems if you choose Firebase instead of AWS?

medium

A. Firebase is too complex and hard to use for simple apps.

B. Firebase requires managing your own SQL database.

C. Firebase does not support realtime data updates.

D. Firebase lacks the flexibility and wide range of cloud services AWS offers.

Solution

1. Step 1: Understand Firebase's limitations

   Firebase is great for simple apps but does not offer the extensive cloud services and flexibility AWS provides.

2. Step 2: Identify the mistake

   Choosing Firebase for complex infrastructure needs leads to lack of flexibility and missing services, which AWS covers well.

3. Final Answer:

   Firebase lacks the flexibility and wide range of cloud services AWS offers. -> Option D

4. Quick Check:

   Complex app needs flexibility = AWS, not Firebase [OK]

Hint: Complex needs require AWS flexibility, not Firebase [OK]

Common Mistakes:

• Thinking Firebase is complex and hard for simple apps
• Believing Firebase lacks realtime support
• Assuming Firebase requires manual SQL management

5. You want to build a realtime app with a SQL database and prefer open-source tools. Which platform should you choose and why?

hard

A. Firebase, because it offers the best SQL support and open-source backend.

B. AWS, because it has the simplest realtime database and open-source features.

C. Supabase, because it provides an open-source SQL backend with realtime capabilities.

D. None, because no platform supports realtime SQL with open-source backend.

Solution

1. Step 1: Identify the requirements

   The app needs realtime updates, SQL database, and open-source tools.

2. Step 2: Match requirements to platforms

   Firebase is not open-source and uses NoSQL; AWS is powerful but not open-source SQL backend; Supabase fits all requirements.

3. Step 3: Confirm Supabase features

   Supabase offers open-source SQL backend with realtime features, ideal for this scenario.

4. Final Answer:

   Supabase, because it provides an open-source SQL backend with realtime capabilities. -> Option C

5. Quick Check:

   Realtime + SQL + open-source = Supabase [OK]

Hint: Realtime + SQL + open-source = Supabase [OK]

Common Mistakes:

• Choosing Firebase for SQL and open-source
• Assuming AWS is open-source SQL backend
• Believing no platform supports these features