The Relational Algebra Operator That Produces a Subset of the Columns

question 66

Short Answer

The relational algebra operator that produces a subset of the columns of the input table is the _________________ operator.

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Definitions:

Sulfide

A chemical compound that consists of sulfur and one or more elements, commonly found in ore minerals and as byproducts of industrial processes.

Silica Tetrahedron

A structural unit of silicon ion surrounded by four oxygen ions, forming the basic building block of silicate minerals.

Silicon

The fourteenth element in the Periodic Table, having the atomic symbol Si.

Silica Tetrahedra

The basic structural unit of silicate minerals, consisting of four oxygen atoms surrounding a single silicon atom.