(1992). Relational database: Writings, 1989-1991 / C.J. Date with Hugh Darwen.
Tohutoru Kātū Chicago (17th ed.)Relational Database: Writings, 1989-1991 / C.J. Date with Hugh Darwen. 1992.
Tohutoro MLA (9th ed.)Relational Database: Writings, 1989-1991 / C.J. Date with Hugh Darwen. 1992.
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