(1) Date, C. J. "Be Careful with SQL EXISTS!", Database Programming and Design, vol. 2, #9 (September, 1989), pp. 50-52.
(2) McGoveran, David. "Nothing from Nothing: the Conclusion", Database Programming and Design, vol. 7, #2 (March, 1994), pp. 54-63.
(3) Johnston, Tom. "MVL:Case Open" and "The Case for MVL", Database Programming and Design, vol. 8, #1 (February, 1995), pp. 52-63 and vol. 8, #2 (March, 1995), pp. 54-68.
(4) Date, C. J. and Darwen, Hugh. "The Default Values Approach to Missing Information", Relational Database Writings 1989-1991, pp. 343-354. Buy this book from Amazon
(5) Darwen, Hugh and Date, C. J. "The Third Manifesto", SIGMOD Record, vol. 24, #1 (March, 1995), pp. 39-49.
(6) Date, C. J., Darwen, Hugh and McGoveran, David. "Nothing to Do with the Case", Database Programming and Design, vol. 8, #9 (September, 1995), pp. 45-52.
(7) Fesperman, Lee, FFE Software, Inc. "Access Path: Letter to Editor", Database Programming and Design, vol. 8, #9 (September, 1995), p 11.
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