Datalog was further refined over the years, As well as in 1989, the language was standardized with the Worldwide Business for Standardization (ISO). The standardization gave the language a way more official specification, which aided in its broader adoption. Its origins date back again to the start of logic programming, https://miloijhbv.wssblogs.com/33838941/not-known-factual-statements-about-datalog