This programming language may be used to instruct a computer to perform a task.
.QL (pronounced "dot-cue-el") is an object-oriented query language used to retrieve data from relational database management systems. It is reminiscent of the standard query language SQL and the object-oriented programming language Java. .QL is an object-oriented variant of a logic programming language known in the databases community as Datalog. Hierarchical data can therefore be naturally queried in .QL in a recursive manner.