文件名称:
SQLAssignment for Chapter 3
开发工具:
文件大小: 1kb
下载次数: 0
上传时间: 2013-10-27
详细说明： Assignment for Chapter 3 作业内容： Q1. Consider the following bank database, where the primary keys are underlined, construct the following SQL queries for this relational database. branch(branch_name, branch_city, assets) customer (customer name, customer_street, customer_city) loan (loan number, branch_name, amount) borrower (customer name, loan number) account (account number, branch_name, balance ) depositor (customer name, account_number) a. Find all customers who have an account at all the branches located in “Brooklyn”. b. Find out the total sum of all loan amounts in the bank. c. Find the names of all branches that have assets greater than those of at least one branch located in “Brooklyn”. Q2. Consider the following database, where the primary keys are underlined, construct the following SQL queries for this relational database. employee (employee_name, street, city) works (employee_name, company_name, salary) company (company_name, city) manages (employee_name, manager_name) a. Find the names of all employees who work for First Bank Corporation. b. Find all employees in the database who live in the same cities as the companies for which they work. c. Find all employees in the database who live in the same cities and on the same streets as do their managers. d. Find all employees who earn more than the average salary of all employees of their company. e. Find the company that has the smallest payroll. Q3. Consider the following database, where the primary keys are underlined, construct the following SQL queries for this relational database. member(memb no, name, age) book(isbn, title, authors, publisher) borrowed(memb no, isbn, date) a. Print the names ofmemberswho have borrowed any book published by “McGraw-Hill”. b. Print the names ofmemberswho have borrowed all books published by “McGraw-Hill”. c. For each publisher, print the names ofmemberswho have borrowed more than five books of that publisher. d. Print the average number of books borrowed permember. Take into account that if an member does not borrow any books, then that member does not appear in the borrowed relation at all. ...展开收缩
(系统自动生成,下载前可以参看下载内容)
下载文件列表
相关说明
- 本站资源为会员上传分享交流与学习,如有侵犯您的权益,请联系我们删除.
- 本站是交换下载平台，提供交流渠道，下载内容来自于网络，除下载问题外，其它问题请自行百度。
- 本站已设置防盗链，请勿用迅雷、QQ旋风等多线程下载软件下载资源，下载后用WinRAR最新版进行解压.
- 如果您发现内容无法下载，请稍后再次尝试；或者到消费记录里找到下载记录反馈给我们.
- 下载后发现下载的内容跟说明不相乎，请到消费记录里找到下载记录反馈给我们，经确认后退回积分.
- 如下载前有疑问，可以通过点击"提供者"的名字，查看对方的联系方式，联系对方咨询.
