File Processing With Cobol pdf epub mobi txt 電子書下載2025

簡體網頁||繁體網頁

☆☆☆☆☆

出版者:

作者:

出品人:

頁數:0

译者:

出版時間:

價格:63.00

裝幀:

isbn號碼:9780835919845

叢書系列:

圖書標籤:

下載連結在頁面底部

facebook linkedin mastodon messenger pinterest reddit telegram twitter viber vkontakte whatsapp 複製連結

想要找書就要到小美書屋

book.quotespace.org

立刻按 ctrl+D收藏本頁

你會得到大驚喜!!

ntrOduCtiOn LE HANDLING This book presents the basic concepts of file processing using the COBOL computer programming language. This chapter provides a short introduction to files and a framework for the logic which is used in the programs of this book. We are all familiar with files that are not computer related. For exam- ~}leï¼Œ many files are maintained in file folders in file cabinets. Data in these ~iles may be typed or writtenï¼Œ if we want to change these dataï¼Œ we open the file cabinet and make the necessary changes. We can add new records by ~)reparing a new file foMer and including it in the appropriate position in ;he file.Records can be remove(1 an(I discarded when they are no longer :leede(l. l~et s look at a specific example. Suppose that the manager of a dormi- Lory facility has a file on paper in which information about residents is main- :ained.There is one file folder for each resident. Each folder contains a ~ esident s nameï¼Œ room numberï¼Œ sexï¼Œ and other" information. The records are placed in alphabetical order" by the resident s name. As people move n and out of the dormitoryï¼Œ records are added or deleted. As people :hange rooms the file is openedï¼Œ and room numbers are changed. In this example the total collection of information is a file. A file is a : ollection of records which are related in some way and which are main- .ained in some order. Here we have established information about indi- dduals living in a dormitory in order by name. The information about one individual is a record. In out" record we have