精选优质文档-倾情为你奉上武汉理工大学 数据库系统原理总复习题（完整版含答案）1. Questions1.1 What is the purpose of a database?ANSWER：The purpose of a database is to help people track of things.1.2 What is the most commonly used type of database?ANSWER: the most commonly used type of database is the relational database.1.7Define the terms data and information. Explain how the two terms differ.ANSWER: Data are recorded facts and numbers. we can now define information as:l Knowledge derived from data.l
