Đọc thêm Dạng_chuẩn

Đọc thêm Dạng_chuẩn_1

Date, C. J., & Lorentzos, N., & Darwen, H. (2002). Temporal Data & the Relational Model Lưu trữ 2012-12-09 tại Archive.today (1st ed.). Morgan Kaufmann. ISBN 1-55860-855-9.
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Kent, W. (1983) A Simple Guide to Five Normal Forms in Relational Database Theory, Communications of the ACM, vol. 26, pp. 120–125
Codd, E.F. (1970). A Relational Model of Data for. Large Shared Data Banks. IBM Research Laboratory, San Jose, California.
Codd, E. F. (1971). Further Normalization of the Relational Model. Courant Computer Science Symposium 6 in Data Base Systems edited by Rustin, R.

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