database英文寫作
關于database的英文寫作，大家看過嗎?下面是學習啦小編給大家整理的database英文寫作，供大家參閱!
database英文寫作篇1
I imagine a lot about lives in the future.I think two words can summarize my imagination.The first word is fast.In the future, we will have more quickly transportation means.Now matter how far we go, it takes only a short time.With the development of science and technology, we can travel to the moon, Mars or somewhere outer space.People may can live in other planets.The second word is convenient.Because of the fast development of our society, many work can be done by computers or even robots.Lots of things are fully automated.Humans just need to give some simple instructions to complete complecated tasks.
database英文寫作篇2
A database consists of an organized collection of data for one or more uses,typically in digital form.One way of classifying databases involves the type of their contents,for example:bibliographic,document-text,statistical.Digital databases are managed using database management systems,which store database contents,allowing data creation and maintenance,and search and other access.
Database architecture consists of three levels,external,conceptual and internal.Clearly separating the three levels was a major feature of the relational database model that dominates 21st century databases.
The external level defines how users understand the organization of the data.A single database can have any number of views at the external level.The internal level defines how the data is physically stored and processed by the computing system.Internal architecture is concerned with cost,performance,scalability and other operational matters.The conceptual is a level of indirection between internal and external.It provides a common view of the database that is uncomplicated by details of how the data is stored or managed,and that can unify the various external views into a coherent whole.
Database介紹
Database是按照數(shù)據(jù)結(jié)構(gòu)來組織、存儲和管理數(shù)據(jù)的倉庫，它產(chǎn)生于距今六十多年前，隨著信息技術和市場的發(fā)展，特別是二十世紀九十年代以后，數(shù)據(jù)管理不再僅僅是存儲和管理數(shù)據(jù)，而轉(zhuǎn)變成用戶所需要的各種數(shù)據(jù)管理的方式。數(shù)據(jù)庫有很多種類型，從最簡單的存儲有各種數(shù)據(jù)的表格到能夠進行海量數(shù)據(jù)存儲的大型數(shù)據(jù)庫系統(tǒng)都在各個方面得到了廣泛的應用。
在信息化社會，充分有效地管理和利用各類信息資源，是進行科學研究和決策管理的前提條件。數(shù)據(jù)庫技術是管理信息系統(tǒng)、辦公自動化系統(tǒng)、決策支持系統(tǒng)等各類信息系統(tǒng)的核心部分，是進行科學研究和決策管理的重要技術手段。[1]
數(shù)據(jù)庫，顧名思義，是存入數(shù)據(jù)的倉庫。只不過這個倉庫是在計算機存儲設備上的，而且數(shù)據(jù)是按一定格式存放的。
當人們收集了大量的數(shù)據(jù)后，應該把它們保存起來進行進一步的處理，進一步的抽取有用的信息。當年人們把數(shù)據(jù)存放在文件柜中，可現(xiàn)在隨著社會的發(fā)展，數(shù)據(jù)量急劇增長，現(xiàn)在人們就借助計算機和數(shù)據(jù)庫技術科學的保存大量的數(shù)據(jù)，以便能更好的利用這些數(shù)據(jù)資源。
要是下定義的話，就應該是：指長期儲存在計算機內(nèi)的、有組織的、可共享的數(shù)據(jù)集合。
數(shù)據(jù)庫包含關系數(shù)據(jù)庫、面向?qū)ο髷?shù)據(jù)庫及新興的XML數(shù)據(jù)庫等多種，目前應用最廣泛的是關系數(shù)據(jù)庫，若在關系數(shù)據(jù)庫基礎上提供部分面向?qū)ο髷?shù)據(jù)庫功能的對象關系數(shù)據(jù)庫。在數(shù)據(jù)庫技術的早期還曾經(jīng)流行過層次數(shù)據(jù)庫與網(wǎng)狀數(shù)據(jù)庫，但這兩類數(shù)據(jù)庫目前已經(jīng)極少使用。
看過database英文寫作的人還看了：