Common Concepts

Window

Window: A way for processing unbounded and streaming events. A window sets an event stream to a static view at a moment for various query operations on database tables.

Expression

An expression is a set of symbols and operators. The CQL parsing engine processes an expression to obtain single values. A simple expression can be a constant, variable, or function. Two or more simple expressions can be combined as a complex expression by using operators.

keytab file

A key file for storing user information. Applications use the key file for API authentication on FusionInsight MRS.