NoSQL

Question 1

What are the types of data that need to be considered when deciding on a cloud persistence solution?

Answer 1

Structured, Semi-Structured, Unstructured

Question 2

Which tool can automate table structure manipulation to reduce errors in RDBMS?

Answer 2

Liquibase

Question 3

What is a key feature of NoSQL databases compared to SQL databases?

Answer 3

They avoid joins and are easy to scale.

Question 4

What is a characteristic of distributed data stores in NoSQL?

Answer 4

They achieve eventual consistency

Question 5

What is the Two Phase Commit (2PC) in database transactions?

Answer 5

A technique to ensure ACID properties by dividing the transaction into prepare and commit phases.

Question 6

Which pattern is used for handling long-lived transactions in distributed systems by ensuring that each sub-transaction has a compensating transaction?

Answer 6

Saga Pattern

Question 7

What is a benefit of asynchronous replication in databases?

Answer 7

Faster performance and reduced latency

Question 8

Why is database security important?

Answer 8

To preserve database confidentiality, integrity, and availability.

Question 9

Which of the following is a common threat to database security?

Answer 9

SQL/NoSQL injection attacks

Question 10

What is Elasticsearch used for?

Answer 10

Distributed search and analytics.

Question 11

What is the purpose of Kibana in the ELK stack?

Answer 11

It provides an interface for data visualization and exploration.