A Distributed Join Is Never Necessary ____

question 8

Multiple Choice

A distributed join is never necessary ____.

• A) if distributed data is not replicated
• B) if distributed data is replicated
• C) if a copy of every table is kept at one site in a distributed database network
• D) if there are at least two copies of every table in a distributed database network
• E) if there are at least two copies of every table involved in the join in a distributed database network

---

Definitions:

Productive Resources

The inputs used in the production of goods and services, including natural resources, human resources, and capital goods.

Full Employment

A situation in an economy where all available labor resources are being used in the most efficient way possible, with minimal unemployment.

Positive Statement

A factual claim about how the world actually works, verifiable by observation or scientific evidence, as opposed to normative statements which involve values and judgements.

Humidity Level

The amount of water vapor present in the air, expressed as a percentage of the amount needed for saturation at the same temperature.