Modern Big Data Processing with Hadoop

Apache HBase

We have just learned about Hive, which is a database where users can access data using SQL commands. But there are certain databases where users cannot use SQL commands. Those databases are known as NoSQL data stores. HBase is a NoSQL database. So, what is actually meant by NoSQL? NoSQL means not only SQL. In NoSQL data stores like HBase, the main features of RDBMS, such as validation and consistency, are relaxed. Also, another important difference between RDBMS or SQL databases and NoSQL databases is schema on write versus schema on read. In schema on write, the data is validated at the time of writing to the table, whereas schema on read supports validation of data at the time of reading it. In this way, NoSQL data stores support ...