Install libghc-relational-schemas-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-relational-schemas-doc
Description:
RDBMSs' schema templates for relational-query; documentation
This package contains some RDBMSs' schema structure definitions. Supported RDBMS schemas are below: + IBM DB2 + PostgreSQL + Microsoft SQLServer + SQLite3 + Oracle + MySQL . This package provides the documentation for a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: http://khibino.github.io/haskell-relational-record/
Version: 0.1.4.2-1build1
Section: universe/doc