1.

An expression in the domain relational calculus is of the form:

A. \(\lbrace P(x_1, x_2,..., x_n)|\rbrace\)
B. \(\lbrace x_1, x_2, ..., x_n | < x_1, x_2, ..., x_n >\rbrace\)
C. \(\lbrace x_1, x_2, ..., x_n | x_1, x_2, ..., x_n \rbrace\)
D. \(\lbrace < x_1, x_2, ..., x_n > | P(x_1, x_2, ..., x_n)\rbrace\)
Answer» E.


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