【单选题】【消耗次数:1】
最常用的数据模型是()。
层次模型
网状模型
关系模型
星形模型
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相关题目
【单选题】 常见的结构数据模型有层次模型、网状模型和( )。
①  联系模型
②  实体模型
③  关系模型
④  概念模型
【单选题】 关系数据模型属于( )。
①  概念数据模型
②  逻辑数据模型
③  存储数据模型
④  对象数据模型
【单选题】 ?关系数据模型属于( ? )
①  概念数据模型
②  逻辑数据模型
③  存储数据模型
④  对象数据模型
【单选题】 关系数据模型属于( )
①  概念数据模型
②  逻辑数据模型
③  存储数据模型
④  对象数据模型
【判断题】 数据模型分为概念数据模型,物理数据模型和逻辑数据模型(100分)
①  正确
②  错误
【单选题】 在数据库概念设计中,最常用的数据模型是( )。
①  关系模型
②  逻辑模型
③  物理模型
④  实体联系模型
【简答题】 传统的数据模型分类,数据库系统可以分为三种类型:[填空]、网状数据库模型和关系数据模型。
【单选题】 在数据库的概念设计中,最常用的数据模型是( )。
①  形象模型
②  物理模型
③  逻辑模型
④  实体联系模型
【判断题】 E.F.Codd提出了网状数据模型。
①  正确
②  错误
【单选题】 当前DBMS所支持的数据模型的主流是()
①  网状模型
②  层次模型
③  关系模型
④  面向对象模型
随机题目
【单选题】 The end of ______ marked the beginning of The Gilded Age, an age of excess and extremes, of decline and progress, of poverty and dazzling wealth, of gloom and hope.
①  the American War of Independence
②  World War I
③  World War II
④  The Civil War
【单选题】 In Henry James’ The Portrait of A Lady, the author tries to portray the young woman as an embodiment of ______.
①  the force of convention
②  the free spirit of the New World
③  the decline of aristocracy
④  the corruption of the newly rich
【单选题】 In his masterpiece The Portrait of A Lady, Henry James _________.
①  incarnates the clash between the Old World and the New in the life journey of an American girl in a European cultural environment
②  tells a story about a young and innocent American confronting the complexity of the European life as well as the American society
③  describes a young American girl who gets “killed” by the winter in Rome
④  tells about some Europeans who learn with difficulty to adapt themselves to the American life
【单选题】 At the middle of 19th century, America witnessed a cultural flowering which is called “_____”.
①  the English Renaissance
②  the Second Renaissance
③  the American Renaissance
④  the Salem Renaissance
【单选题】 In Dreiser’s Sister Carrie, which of the following statements is NOT true about the characters in the story?
①  At the end of the story, Hurstwood’sfamily are enjoying a happy life without him.
②  Being unable to make a decent living, Hurstwood at last commits suicide.
③  In spite of her success as a famous actress Carrie does not feel happy.
④  Carrie becomes rich and helps Hurstwood out of his difficulty.
【单选题】 Which of the following is not written by Henry James?
①  Daisy Miller
②  The Wings of the Dove
③  The American
④  Self-Reliance
【单选题】 Stylistically, Henry James’ fiction is characterized by ________.
①  highly refined language
②  ordinary American speech
③  short, clear sentences
④  abundance of local images
【单选题】 The first American writer of local color to achieve wide popularity was?____.
①  Bret Harte
②  Mark Twain
③  Henry James
④  William Dean Howells
【单选题】 Mark Twain, one of the greatest 19th century American writers, is well known for his ______.
①  international theme
②  waste-land imagery
③  local colorism
④  symbolism
【单选题】 Who exerts the single most important influence on literary naturalism, of which Theodore Dreiser and Jack London are among the best representative writers?
①  Freud
②  Darwin
③  W. D. Howells
④  Emerson