References
Codd, E.F. (1970) A Relational Model for Large Shared Data Banks. Communications of the ACM, 13(6):377–387.
Codd, E.F. (1972) Relational Completeness of Data Base Sublanguages. In R. Rustin (ed.), Database Systems, 65–98. Prentice-Hall.
You are currently reading a PREVIEW of this book.
Get instant access to over
$1 million worth of books and videos.
Start a Free Trial