In a hierarchical database, in addition to actual knowledge, data additionally contain information about their teams of parent/child relationships. SQL is the commonest standardized language used to entry databases. Depending in your programming environment, you may enter SQL directly , embed SQL statements into code written in one other language, or use a language-specific API that hides the SQL syntax. Thanks to even data distribution, Cassandra is relevant in applications where massive volumes of data are processed. Also, Cassandra fits properly with real-time analytics, because it allows linear scaling and knowledge increase in real time. You may also contemplate it for functions with fixed information streaming like climate apps.