外文翻譯--數(shù)據(jù)庫信息管理系統(tǒng)簡介-免費(fèi)閱讀
【正文】 異常情況下對數(shù)據(jù)的容錯處理。 (6) 可移植性和可擴(kuò)展性。 (3)數(shù)據(jù)庫管理系統(tǒng)的性能分析。 （ 5）增加了系統(tǒng)的靈活性。 （ 4） 數(shù)據(jù)的組織與存?。禾峁?shù)據(jù)在外圍儲存設(shè)備上的物理組織與存取方法。 操作系統(tǒng) 操作系統(tǒng)是 DBMS 的基礎(chǔ)。通過定義可知，綜合要求業(yè)務(wù)領(lǐng)域經(jīng)理和公司領(lǐng)導(dǎo)密切地合作。在設(shè)計這些系統(tǒng)時，很少考慮到最終要將它們綜合的意圖。通常的信息系統(tǒng)是上述各種類型的組合。它使用戶能方便地 定義和操縱數(shù)據(jù)，維護(hù)數(shù)據(jù)的安全性和完整性，以及進(jìn)行多用戶下的并發(fā)控制和恢復(fù)數(shù)據(jù)庫。 the database capacity, capacity characteristic database determines the scope of use of the database management system. (2) the degree of difficulty of program development. There is no puter aided software engineering tool CASE puter aided software engineering tools can help developers to provide maintenance, coding environment in the development phase of the method according to software engineering, development, maintenance is convenient for plex software. A design method of the fourth generation language development with a non procedural language platform without the fourth generation language, the user does not need to write code to process plex, and easy to understand, easy maintenance. A logical way of non object oriented design platform the idea of objectoriented design is very similar to humans, to facilitate the development and maintenance. The multimedia data type support multimedia data needs is a development trend in the future, will be a database management system to support multimedia data types to reduce application development and maintenance. (3) performance analysis of database management system. Including evaluating performance (response time, throughput of data per unit time), performance monitoring (internal and external memory usage, system input / output rate, the SQL statement, the database tuples control), performance management (parameter setting and adjustment). (4) for distributed application support. Including data transparency and work transparency. Transparent data refers to the user does not need to point out what the data on the nodes in the work in the application, the database management system can automatically search the Inter, extract the required data。 to achieve full sharing of data resources, and so on. In addition, the database technology also provides users with a very simple means to enable users to easily use the preparation of the database applications. Especially in recent years introduced microputer relational database management system dBASELL, intuitive operation, the use of flexible, convenient programming environment to extensive (generally 16 machine, such as IBM / PC / XT, China Great Wall 0520, and other species can run software), dataprocessing capacity strong. Database in our country are being more and more widely used, will be a powerful tool of economic management. The database is through the database management system (DBMSDATA BASE MANAGEMENT SYSTEM) software for data storage, management and use of dBASELL is a database management system software. Information management system is the use of data acquisition and transmission technology, puter work technology, database constructi on, multimedia technology, business needs, such as the establishment of a management platform, the platform constructed on the basis of pure software business management system (to meet the business needs for the purpose), achieving operational systems of data and information sharing, and based on this structure enquiries, scheduling or decisionmaking system. Information system can be manual or puterbased, independent or integrated, batch or online. The information system is usually the various types of bination. That is, of course, it can not be independent and is integrated. 1. Independent
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