Which use cases indicate that a non-relational database might be a better solution than a relational database? (Select TWO.)

A) Horizontal scaling for massive data volume

B) ACID compliance for all database transactions

C) Data with unpredictable attributes

D) Strong read-after-write consistency

E) High availability and fault tolerance

• Answer

Which statement that compares a database service that Amazon Web Services (AWS) manages with a database on an Amazon Elastic Compute Cloud (Amazon EC2) instance is true?

A) You do not need to configure backups for a database on a managed database service.

B) AWS manages DB patches for a database on a managed database service.

C) AWS manages operating system (OS) patches for a database on an EC2 instance.

D) You do not need to configure backups for a database on an EC2 instance.

• Answer

Which examples are good use cases for Amazon Relational Database Service (Amazon RDS)? (Select THREE.)

A) Thousands of distributed concurrent writes per second

B) An application that requires the database to enforce syntax rules

C) An application that requires complex joins of data