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A computer database is a structured collection of records or data that is stored in a computer system. A database relies upon software to organize the storage of data. In other words, the software models the database structure in what are known as database models (or data models). The model in most common use today is the relational model. Other models such as the hierarchical model and the network model use a more explicit representation of relationships
Database management systems (DBMS) are usually categorized according to the database model that they support. The data model tends to determine the query languages that are available to access the database. A great deal of the internal engineering of a DBMS, however, is independent of the data model, and is concerned with managing factors such as performance, concurrency, integrity and recovery from hardware failures. In these areas there are large differences between products (which vary from Microsoft Access to File Maker).
The most common and basic type of data encoding involves an individual's name followed by the information, with spaces, comma and hyphens separating each relevant piece of information. Items such as these are usually arranged by rows, with each row referred to as a record. Simply put, this type of virtual record is comparable to a real-life list, like a grocery list or shopping list.
Another form of database is the spreadsheet similar to the format used in Microsoft Excel, for example. They organize data through a variety of means, either by arranging records by surname, first name or by alphabetic order, reverse-alphabetical, time of modification and so on. Because the items are not only arranged horizontally but also vertically, the records is easier to comprehend.
Another benefit of using a database is data manipulation. Technology has advanced tremendously since its early uses in the 1960s and 1970s. The most common kind of data manipulation is a sorted list of the contents of some particular table column, with pointers to the row associated with the value. Data manipulation allows a set of table rows matching some criterion to be located quickly.
Among the most basic examples of a database is the text file. Most ordinary computer users keep their database in the form of a text -- like a list of email addresses, a list of names, or a list of telephone numbers. It can be kept in programs such as Microsoft Word, Notepad, or Wordpad. This information is useful in many tasks, such as sending email.
A computer http://www.databasemonster.com/Database%3A+Organize+Your+Files.20222.htm) Database, or simply called a http://www.databasemonster.com/Database%3A+Organize+Your+Files.20222.htm) Database, is a collection of information and data stored in a computer system.
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