A foreign key is a field in a relational table that matches the primary key column of another table. The foreign key can be used to cross-reference tables. Foreign keys do not need to have unique values in the referencing relation. Foreign keys effectively use the values of attributes in the referenced relation to restrict the domain of one or more attributes in the referencing relation. A foreign key could be described formally as: ''For all tuples in the referencing relation projected over the referencing attributes, there must exist a tuple in the referenced relation projected over those same attributes such that the values in each of the referencing attributes match the corresponding values in the referenced attributes.''
is a field in one table whose values are required to match a primary key in another table?
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Answer: yes

Ho Chi Minh City (Vietnamese: Thanh pho Ho Chi Minh; (thaj fo ho ti mi) ( listen) or (than fo ho ci mn); formerly French: Ho-Chi-Minh-Ville), also widely known by its former name of Saigon (Vietnamese: Sai Gon; (saj n) or Vietnamese pronunciation: (aj )), is the largest city in Vietnam by population. It was known as Prey Nokor (Khmer: ) prior to annexation by the Vietnamese in the 17th century. Under the name Saigon, it was the capital of the French colony of Cochinchina and later of the independent republic of South Vietnam 1955--75. On 2 July 1976, Saigon merged with the surrounding Gia inh Province and was officially renamed Ho Chi Minh City after revolutionary leader Ho Chi Minh (although the name Sai Gon is still widely used).
is saigon the same as ho chi minh city?
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Answer: yes

Jordan was born in Santa Ana, California, the son of Donna (nee Davis), an artist and high school guidance counselor, and Michael A. Jordan. He has an older sister, Jamila, who works in production, and a younger brother, Khalid, who was a football player at Howard University.
is michael b jordan related to basketball michael jordan?
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Answer:
no