更多"For relation where primary key cont"的相关试题:
[单项选择]For relation R where primary key contains multiple attributes,no non-key attribute should be functionally dependent on a part of the primary key. This relation R is at least in ( )。
A. 1NF
B. 2NF
C. 3NF
D. BCNF
[单项选择]For relation where primary key contains multiple attributes，no non-key attribute should be functionally dependent on a part of primary key．This relation R is at least in （）.
A. 3NF
B. 2NF
C. INF
D. BCNF
[单项选择](It was) (in the) primary school (where) my teacher introduced (me to) computers.
A. It was
B. in the
C. where
D. me to
[单项选择]Where is （）key to the door, Jim
A. a
B. the
C. x
[单项选择]Where is my key I forgot ______ it in my pocket when I locked the bike.
A. to put
B. putting
C. put
[单项选择]Where could she ______ the key I couldn't find anywhere.
A. put
B. have put
C. has put
D. had put
[单项选择]Primary responsibility for establishing design and test specifications rests with ______ .
A. senior management
B. procurement
C. engineering
D. quality control
[单项选择]Safety is always our primary concern.
A. least
B. secondary
C. last
D. chief
[单项选择]The primary dissimilarity between the youth market in Europe and that in the U.S. is that______.
A. the volume of sales in Europe is more enormous than that in America
B. there are more abundant sorts of goods in Europe than in America
C. the prominent consumers in the youth market in Europe are the working youth
D. the young customers in Europe have comparatively larger purchasing power
[单项选择]What three primary colors do we see
A. Red, white, and blue.
B. Red, green, and yellow.
C. Red, green, violet.
D. Red, green, blu
[单项选择]The primary solution to environmental problems is ______.
A. to allow market forces to operate properly
B. to control consumption of natural resources
C. to limit the growth of the world population
D. to avoid fluctuations in prices
