Google - https://cloud.google.com/products/databases
Microsoft - https://docs.microsoft.com/en-in/azure/?product=databases
CAP Theorem, CAP Theorem. CAP theorem also known as Brewer’s… | by Vivek Kumar Singh | System Design Blog | Medium
Tutoriale:
NoSQL Tutorial: Types of NoSQL Databases, What is & Example (guru99.com)
The Rise of NoSQL and Why it Should Matter to You | Simplilearn
8 Examples to Query a NoSQL Database | by Soner Yıldırım | Towards Data Science
MongoDB:
Big Data Tutorial 2022 | Big Data Full Course | Big Data Analytics | Big Data Hadoop | Simplilearn
Big Data Full Course 2022 | Big Data Tutorial For Beginners | Big Data Step By Step | Simplilearn
Elasticsearch: Beginner's Crash Course to Elastic Stack
Cassandra: Apache Cassandra Database – Full Course for Beginners
Hadoop vs HDFS vs HBase vs Hive: http://www.acheronanalytics.com/acheron-blog/hadoop-vs-hdfs-vs-hbase-vs-hive-what-is-the-difference