The introduction of perfectness database series - foundation piece 1
Tuesday, March 03, 2009 by rain
? ? is a memory that can move actually, software system that safeguard and uses a system to provide data,The aggregate that is object of memory medium, processing and administrative system.It is comprised by software, database and data manager normally.Its software basically includes all sorts of operating system, host languages,Utility program and database management system.The database is the data gather in model of some kind of data organizes according to and depositing two class memory.These data serve for many application,Independent at specific applied process.The database consolidates management by database management system,The insertion of data, revise and retrieve all should manage a system to undertake through the database.Database management system is software of a kind of system,Its main function is data of share of the random in maintain a database and visitting a database effectively.To the database maintain the integrality that includes to carry data, consistency and security.Data manager is in charge of founding, monitoring and maintain whole database,Make data can be used effectively by any people that authority is used.Database manager is by professional skill the personnel with taller, deeper qualifications and record of service is held the position of commonly.
The individual meaning of system of ? ? database is to show a specific database manages systematic software and the database that build with it;Its course meaning is to point to research, development, build, the subject that place of the theory that safeguard and uses database system place to involve, method, technology makes.Below this one meaning,A database system is software research domain main branch,Often call database field.
? ? database considers to span to be mixed at software of computer application, system academic three domains,Apply the development that promotes new system to develop among them,New system brings new academic research,And before academic research is opposite again two domains are having direct effect.A milepost that the occurrence of database system is computer application,It makes succeed in one's scheme calculates machine application from give priority to with scientific computation change direction to be given priority to with data processing,Make the computer is able to use generally in all trades and professions and even family thereby.Although the file system before it also can process abiding data,But the quick visit that file system does not provide pair of aleatoric share data,And it is crucial for the application that this increases ceaselessly to data bulk.The quick visit that occupies to come true to be counted to aleatoric part,Be about to study a lot of optimizing technology.These optimize a technology often very complex,It is average user come true hard,So by systematic software (database management system) will finish,And those who provide an user is the database language that uses easily simply.Because be opposite,the operation of the database is finished by database management system,So the database can become independent to exist at specific applied process,Thereby the database can be shared for many users place again.Because of this,The independent character of data and the main feature that sharing a gender is database system.Data is shared saved material resources of much labor power,The wide application that is database system laid a foundation.The occurrence of database system makes average user can stock daily data the computer conveniently and visit them quickly when need,The computer that makes thereby walks out of scientific research orgnaization to enter all trades and professions, enter a family.