计算机专业英语章节4节.pptVIP

Database What can I do? ? Background: Richard and Mark are good friends. They are in the same university. Richard is majoring in computer science and Mark is a business trade major. They often gather together to have a chat. Now let’s hear what they are talking about. What can I do? ? RICHARD: what are you up to these days? MARK: My sister would like to open an audio-video shop. I’m helping her with it. RICHARD: Selling audio-video products? MARK: Yea, as well as rental business. And we want to manage the selling and rental business with the help of computer. You know I’m not familiar with computer well. Can you introduce something related to me? What can I do? ? RICHARD: Certainly. This task is especially suited to a database. Do you know something about database? MARK: Little. Database, the concept seems too abstract to comprehend. RICHARD: That’s quite true especially for some non-computer major. I think, first of all, you have to find some materials to read. MARK: Yes, I will. But now can you explain to me in short terms? What can I do? ? RICHARD: All right. Simply speaking, a database seems a huge storehouse of data, which is organized in a certain way waiting to be retrieved. And databases are also very common on the World Wide Web. For example, Information retrieval, E-Commerce and Dynamic Web Pages are all the examples of Web Databases in Use. MARK: It sounds interesting. RICHARD: Otherwise, I suggest that you conduct business online meanwhile. MARK: Good idea! I’ll talk with my sister about it. Thank you very much! RICHARD: My pleasure! Contents 4.1 Introduction to Databases 4.1 Introduction to Databases What is a database? What is a database management system (DBMS)? Do you know something about physical level, logical level, view level? 4.1 Introduction to Databases A database can simply be defined as a structured set of data. 译文：数据库可以简单地定义为一组结构化的数据集。 4.1 Introduction to Data