RDS supported engines in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the Amazon RDS engine for MySQL.

AWS

engine = "[1]"

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

Asqlserver

Boracle

Cmysql

Dmongodb

Attempts:

3 left

💡 Hint

Common Mistakes

Using unsupported engines like MongoDB which is not supported by RDS.

Confusing engine names with database types.

The correct engine name for MySQL in Amazon RDS is mysql.

2fill in blank

medium

Complete the code to specify the Amazon RDS engine for PostgreSQL.

AWS

engine = "[1]"

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

Apostgres

Bmariadb

Csqlserver

Doracle

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'postgresql' instead of 'postgres' as the engine name.

Confusing PostgreSQL with MariaDB or Oracle.

The correct engine name for PostgreSQL in Amazon RDS is postgres.

3fill in blank

hard

Fix the error in the code to specify the Amazon RDS engine for MariaDB.

AWS

engine = "[1]"

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

Asqlserver

Bmysql

Cpostgres

Dmariadb

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'mysql' instead of 'mariadb' for MariaDB engine.

Using unsupported engine names.

The correct engine name for MariaDB in Amazon RDS is mariadb.

4fill in blank

hard

Fill both blanks to specify the Amazon RDS engine and version for SQL Server.

AWS

engine = "[1]"
engine_version = "[2]"

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

Asqlserver

B2019

C2017

Doracle

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'oracle' as engine name for SQL Server.

Using invalid version strings.

The engine name for SQL Server is sqlserver. The version can be specified as 2017 or 2019. Here, 2017 is chosen.

5fill in blank

hard

Fill all three blanks to specify the Amazon RDS engine, version, and license model for Oracle.

AWS

engine = "[1]"
engine_version = "[2]"
license_model = "[3]"

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

Aoracle

B12.2

Cbring-your-own-license

Dpostgres

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'postgres' as engine for Oracle.

Using incorrect license model strings.

Oracle engine is specified as oracle. Version 12.2 is a valid Oracle RDS version. License model bring-your-own-license is a common option for Oracle.

Practice

1. Which of the following database engines is supported by AWS RDS?

easy

A. MySQL

B. MongoDB

C. Cassandra

D. Redis

Solution

1. Step 1: Recall AWS RDS supported engines

   AWS RDS supports popular relational database engines like MySQL, PostgreSQL, Oracle, SQL Server, and Aurora.

2. Step 2: Identify which option matches supported engines

   Among the options, only MySQL is a supported RDS engine. MongoDB, Cassandra, and Redis are not supported by RDS but by other AWS services.

3. Final Answer:

   MySQL -> Option A

4. Quick Check:

   RDS supports MySQL = A [OK]

Hint: Remember RDS supports relational engines like MySQL, not NoSQL [OK]

Common Mistakes:

• Confusing NoSQL databases as RDS engines
• Assuming Redis is supported by RDS
• Thinking Cassandra is supported by RDS

2. Which of the following is the correct way to specify the engine when creating an RDS instance using AWS CLI?

easy

A. --engine mongodb

B. --engine mysql

C. --engine redis

D. --engine cassandra

Solution

1. Step 1: Understand AWS CLI engine parameter

   The AWS CLI uses the parameter --engine to specify the database engine when creating an RDS instance.

2. Step 2: Identify valid engine names

   Valid engine names include mysql, postgres, oracle, sqlserver, aurora. MongoDB, Redis, and Cassandra are not valid for RDS engine parameter.

3. Final Answer:

   --engine mysql -> Option B

4. Quick Check:

   Correct engine name for MySQL is mysql [OK]

Hint: Use lowercase engine names like mysql, not unsupported ones [OK]

Common Mistakes:

• Using unsupported engines like mongodb or redis
• Capitalizing engine names incorrectly
• Confusing engine parameter with instance type

3. Given the following AWS CLI command to create an RDS instance:

aws rds create-db-instance --db-instance-identifier mydb --engine postgres --allocated-storage 20 --db-instance-class db.t3.micro --master-username admin --master-user-password secret123

What database engine will this RDS instance use?

medium

A. SQL Server

B. MySQL

C. Oracle

D. PostgreSQL

Solution

1. Step 1: Analyze the --engine parameter in the command

   The command specifies --engine postgres, which corresponds to PostgreSQL.

2. Step 2: Match engine parameter to database engine

   Postgres is the short name for PostgreSQL, a supported RDS engine.

3. Final Answer:

   PostgreSQL -> Option D

4. Quick Check:

   --engine postgres means PostgreSQL [OK]

Hint: Look for --engine value to identify the database engine [OK]

Common Mistakes:

• Confusing postgres with MySQL
• Assuming default engine is MySQL
• Ignoring the --engine parameter

4. You tried to create an RDS instance with the command:

aws rds create-db-instance --db-instance-identifier testdb --engine mongo --allocated-storage 20 --db-instance-class db.t3.micro --master-username admin --master-user-password secret123

But it failed. What is the most likely reason?

medium

A. The master username is missing

B. The allocated storage is too low

C. The engine name 'mongo' is not supported by RDS

D. The instance class db.t3.micro is invalid

Solution

1. Step 1: Check the engine parameter validity

   The engine parameter is set to 'mongo', which is not a supported RDS engine. MongoDB is not supported by RDS.

2. Step 2: Verify other parameters

   Allocated storage of 20 GB and instance class db.t3.micro are valid. Master username is provided.

3. Final Answer:

   The engine name 'mongo' is not supported by RDS -> Option C

4. Quick Check:

   Unsupported engine name causes failure [OK]

Hint: Check engine names carefully; unsupported names cause errors [OK]

Common Mistakes:

• Assuming MongoDB is supported by RDS
• Blaming storage size or instance class incorrectly
• Overlooking the exact error message

5. You want to migrate an on-premises Oracle database to AWS RDS. Which RDS engine should you choose to ensure compatibility and minimal changes?

hard

A. Oracle

B. PostgreSQL

C. Aurora MySQL

D. SQL Server

Solution

1. Step 1: Identify the source database engine

   The source is an on-premises Oracle database, so compatibility is key.

2. Step 2: Choose the matching RDS engine

   AWS RDS supports Oracle as a managed engine, which ensures compatibility and minimal changes during migration.

3. Step 3: Consider other options

   Aurora MySQL, PostgreSQL, and SQL Server are different engines and would require significant changes.

4. Final Answer:

   Oracle -> Option A

5. Quick Check:

   Match source engine to RDS engine for smooth migration [OK]

Hint: Pick the same engine type for easy migration [OK]

Common Mistakes:

• Choosing Aurora MySQL for Oracle migration
• Assuming PostgreSQL is compatible with Oracle
• Ignoring migration compatibility