Most dbmss include a feature which has a graphical user interface to assist users with retrieving data which is this feature called qba sql qbe schema?

The feature you're referring to is called QBE, which stands for Query By Example. QBE provides a graphical user interface that allows users to construct database queries by providing examples of the data they want to retrieve, rather than writing complex SQL code. This makes it easier for users who may not be familiar with SQL to interact with the database and retrieve the information they need.