A Joining Operation in Which Only the Joining Attribute from One

question 26

Multiple Choice

A joining operation in which only the joining attribute from one site is transmitted to the other site is called a(n) :

• A) attribute linkup.
• B) key data element transfer.
• C) key data element join.
• D) semijoin.

---

Definitions:

Optimal Area

The most efficient or advantageous point or region for a particular activity or the achievement of the highest benefit given constraints.

Public Education

A system where the government provides educational services without direct charge to households, funded by taxation.

Positive Externalities

Benefits that affect parties who did not choose to incur that benefit, often associated with public goods or services, like education and vaccination.

Public Good

A public good is a product that one individual can consume without reducing its availability to another individual and from which no one is excluded.