MongoDB vs. Cassandra vs. HBase: A Comparison
Databases are organized collections of data stored in a server or a system elsewhere and can be retrieved upon need. They can be managed and even updated as and when the need arises. This data can be in the form of texts, images, integers, or multimedia files. SQL uses a standard query language to manage relational databases. You must have heard of MySQL, PostgreSQL, Oracle, and Microsoft SQL servers.