tailieunhanh - Tiếng anh chuyên ngành công nghệ thông tin part 5

Tham khảo tài liệu 'tiếng anh chuyên ngành công nghệ thông tin part 5', công nghệ thông tin, tin học văn phòng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Lesson 4 Basic software A database file stores information in fields grouped on records II. Reading A. Here is a part of an article about databases. First read all the way through and underline the basic features of a database. Basic features of database programs With a database you can store organize and retrieve a large collection of related information on computer. If you like it is the electronic equivalent of an indexed filing cabinet. Let US look at some features and applications. Information is entered on a database via fields. Each field holds a separate piece of information and the fields are collected together into records. For example a record about an employee might consist of several fields which give their name address telephone number age salary and length of employment with the company. Records are grouped together into files which hold large amounts of information. Files can easily be updated you can always change fields add new records or delete old ones. With the right database software you are able to keep track of stock sales market trends orders invoices and many more details that can make our company successful. Another feature of database programs is that you can automatically look up and find records containing particular information. You can also search on more than one field at a time. For example if a managing director wanted to know all the customers 104 Lesson 4 Basic softw are that spend more than per month the program would search on the name field and the money field simultaneously. A computer database is much faster to consult and update than a card index system. It occupies a lot less space and records can be automatically sorted into numerical or alphabetical order using any field. The best packages also include networking facilities which add a new dimension of productivity to businesses. For example managers of different departments can have direct access to a common database which represents an enormous advantage. Thanks