1.choose the best answer
What is the primary difference between the relational database (RDB) and
object-oriented database (OODB) models?
A) RDB allows the definition of relationships between different tables, whereas OODB
does not allow this.
B) OODB incorporates methods with data structure definition, whereas RDB does not
allow this.
C) OODB supports multiple objects in the same database, whereas RDB supports only
tables.
D) RDB supports E.F. Codd's rules, whereas OODB does not support them.
Answer：

【OCP-12c】CUUG 071题库考试原题及答案解析（19）的更多相关文章

  1. 【OCP认证12c题库】CUUG 071题库考试原题及答案（28）

    28.choose the best answer Evaluate the following SQL statement: SQL> SELECT promo_id, promo_categ ...

  2. 【OCP认证12c题库】CUUG 071题库考试原题及答案（27）

    27.choose two The SQL statements executed in a user session are as follows: SQL> CREATE TABLE pro ...

  3. 【OCP认证12c题库】CUUG 071题库考试原题及答案（26）

    26.choose two Examine the structure of the PRODUCTS table. Which two statements are true? A) EXPIRY_ ...

  4. 【OCP认证12c题库】CUUG 071题库考试原题及答案（25）

    25. choose the best answer Evaluate the following SQL statement: ALTER TABLE hr.emp SET UNUSED (mgr_ ...

  5. 【OCP-12c】CUUG 071题库考试原题及答案解析（24）

    24. choose the best answer In the EMPLOYEES table there are 1000 rows and employees are working in t ...

  6. 【OCP-12c】CUUG 071题库考试原题及答案解析（23）

    23.choose the best answer View the Exhibits and examine PRODUCTS and SALES tables. You issue the fol ...

  7. 【OCP-12c】CUUG 071题库考试原题及答案解析（22）

    5.choose the best answer Evaluate the following CREATE SEQUENCE statement: CREATE SEQUENCE seq1 STAR ...

  8. 【OCP-12c】CUUG 071题库考试原题及答案解析（21）

    3.choose three View the Exhibit and examine the description of SALES and PROMOTIONS tables. You want ...

  9. 【OCP-12c】CUUG 071题库考试原题及答案解析（20）

    20.choose two Examine the description of the EMP_DETAILS table given below: Which two statements are ...

随机推荐

  1. 图像特征与描述子（直方图， 聚类， 边缘检测， 兴趣点/关键点， Harris角点， 斑点（Blob), SIFI, 纹理特征）

    1.直方图 用于计算图片特征,表达, 使得数据具有总结性, 颜色直方图对数据空间进行量化,好比10个bin 2. 聚类 类内对象的相关性高 类间对象的相关性差 常用算法:kmeans, EM算法, m ...

  2. 实现socketChannel 通信例子

    https://blog.csdn.net/qq_33935895/article/details/79678345

  3. eclipse中使用maven的 maven install

    windows -> preferences -> Java -> Installed JREs 在default VM arguments 中添加 -Dmaven.multiMod ...

  4. 06-SSH综合案例：前台首页访问

    1.5 编码实现: 1.5.1 首页显示: 复制所有文件到工程下: *  css *  js *  image 复制页面到工程WEB-INF/jsp/ * 将后缀.htm改为jsp 访问一个Actio ...

  5. UIScollView

        NSArray 类定义的方法 1.  makeObjectsPerformSelector:@select(aMethod) 简介:让数组中的每个元素 都调用 aMethod 2. makeO ...

  6. Sprint boot notes

    1. spring.io 官网 2. http://javainuse.com/spring/sprboot spring boot学习资源 3. spring boot websocketss视频  ...

  7. php识别二维码

    php-zbarcode 是 PHP 读取条形码的扩展模块,目前仅支持 php5.x

  8. Python中ndarray数组切片问题a[-n -x:-y]

    先看看如下代码: >>a=np.arange(10)>>a array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])>>a[-7:] array( ...

  9. 主键冲突异常 DuplicateKeyException

    org.springframework.dao.DuplicateKeyException Exception thrown when an attempt to insert or update d ...

  10. Python学习-14.Python的输入输出（三）

    在Python中写文件也是得先打开文件的. file=open(r'E:\temp\test.txt','a') file.write('append to file') file.close() 第 ...