第一部分 基础知识练习 目标 本章对应于<学生指南>各章的内容分别提供了练习题集,包括: ●  第一章Java入门 ●  第二章数据类型和运算符 ●  第三章流程控制与数组 ●  第四章封装 ●  第五章继承 ●  第六章抽象类与接口 ●  第七章多态 ●  第八章异常 ●  第九章多线程机制 ●  第十章输入输出流 ●  第十一章使用泛型和集合框架 ●  第十二章基于Swing的图形用户界面(GUI)设计 ●  第十三章Java事件驱动编程 第一章练习题(Java入门) 1．下列哪项不是JD…

1.你创建了一个ASP.net应用程序,该程序将运行在TK公司的WEB站点上.你的应用程序包括100个WEB页面.你想配置你的应用程序,当HTTP代码发生错误时,可显示自定义的错误信息给用户.同时你想当程序发生错误时记录到日志中.你想以最小的配置影响完成该目标,下面的那二件事你必须做?(选二项)(AD) A.为应用程序在Global.asax文件中创建Application_Error过程,来控制ASP.net代码错误: B.为应用程序在Web.config文件中创建Application_Er…

choose one What is a pre-requisite to alter a role? A) You should set the OS_ROLES parameter to true. B) You should be granted the DBA role. C) You should be granted the role with the GRANT OPTION. D) You should have the ALTER ANY ROLE system privile…

4.Which four are true about creating and running a remote database scheduler jobs? A) A credential is optional for a remote database job. B) A database destination group must exist or be created for a job to run on multiple remote databases. C) A des…

80.View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables. You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order. Which CREATE VIEW statement would create the views successf…

79.Which statement is true about transactions? A. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction. B. Each Data Definition Language(DDL) statement executed forms a single…

78.View the exhibit and examine the structure of the CUSTOMERStable. Which two tasks would require subqueries or joins to be executed in a single statement? A. finding the number of customers, in each city, whose credit limit is more than the average…

77.Which two statements are true about sequences created in a single instance database? (Choose two.) A. When the MAXVALUElimit for the sequence is reached, you can increase the MAXVALUElimit by using the ALTER SEQUENCEstatement. B. DELETE < sequence…

76.View the exhibit and examine the description of the DEPARTMENTSand EMPLOYEEStables. The retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written: SELECT employee_id, first_…

75.Which statements are correct regarding indexes? (Choose all that apply.) A. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to creates a unique index. B. Indexes should be created on columns that are frequentl…