Introducing CQL (SQL Skills Welcome)

The text is an excerpt from a DataStax eBook titled "Getting Started with NoSQL and Apache Cassandra™". It discusses how to migrate to Apache Cassandra™ and build powerful applications using it. CQL (Cassandra Query Language) is introduced as a fast way to start working with Cassandra, especially for those familiar with SQL. The text also highlights key similarities and differences between CQL and SQL, such as the way data deletion works in Cassandra compared to an RDBMS. It mentions that Apache Cassandra is designed for high write throughput and uses SSTables (immutable once written) where a delete operation is actually an update and updates are inserts into new SSTables. The text also notes that similar to SQL, permissions and resources can be controlled in CQL.