071考試不僅是OCP11g的考試科目，同時(shí)也是OCP 12c的考試科目，所以關(guān)心071考題的同學(xué)有很多，對(duì)此我們專門收集整理了近期071考試的原題，并對(duì)這些考題進(jìn)行講解，希望幫助廣大考生順利通過(guò)071考試。
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071考題解析-第66題、choose two
Examine the structure proposed for the TRANSACTIONS table:
Which two statements are true regarding the creation and storage of data in the above table structure?
A) The TRANS_DATE column would be able to store day, month, century, year, hour, minutes, seconds,
and fractions of seconds.
B) The CUST_STATUS column would store exactly one character.
C) The TRANS_VALIDITY column would have a maximum size of one character.
D) The TRANS_VALIDITY column would give an error.
E) The CUST_STATUS column would give an error.
F) The CUST_CREDIT LIMIT column would not be able to store decimal values.
Answer：BD
(解析：定義列的數(shù)據(jù)類型時(shí)，char 的可以省略位數(shù)，默認(rèn)是 1，但是 varchar2 不能省略位數(shù)，否則報(bào)錯(cuò)。
注意 date 和 timestamp 的格式區(qū)別：
date 類型存儲(chǔ)數(shù)據(jù)的格式為年月日時(shí)分秒，可以精確到秒
timestamp 類型存儲(chǔ)數(shù)據(jù)的格式為年月日時(shí)分秒，可以精確到納秒(9 位)
)
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