Cupid: a graphics oriented facility for support of non-programmer interactions with a data base.

A framework for choosing a database query language

ACM Computing Surveys (CSUR)

The proteus bibliography: Representation and interactive display in databases

ACM SIGMOD Record

Query generation in an instructional database management system

SIGCSE '87 Proceedings of the eighteenth SIGCSE technical symposium on Computer science education

The design and implementation of INGRES

ACM Transactions on Database Systems (TODS)

An algebraic language for graphical query formulation using an extended entity-relationship model

CSC '87 Proceedings of the 15th annual conference on Computer Science