Two relations must have the same number of attributes on the same doma…

Question

Two relations must have the same number of attributes on the same domains to be:

Accepted Answer

B. Union compatible

1. Some operators combine two relations.
2. Their shapes must match first.
3. They must be union compatible.
_Source: OpenStax Introduction to Computer Science, Chapter 8, Data Management._

Answer

Usage countable

Answer

Unit convertible

Answer

Unique comparable

Two relations must have the same number of attributes on the same domains to be:

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