operating system virtualization
Operating system virtualization refers to the use of software to allow system hardware to run multiple instances of different operating systems concurrently, allowing you to run different applications requiring different operating systems on one computer system. The operating systems do not interfere with each other or the various applications. Not to be confused with operating system-level virtualization, which is a type of server virtualization.
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- ODS
Short for operational data store, a type of database that serves as an interim area for a data warehouse in order to store time-sensitive operational data that can be accessed quickly and efficiently. In contrast to a data warehouse, which contains large amounts of static data, an ODS contains small amounts of information that is […]
- Operator
(1) A symbol that represents a specific action. For example, a plus sign (+) is an operator that represents addition. The basic mathematic operators are + addition, – subtraction,* multiplication,/ division. In addition to these operators, many programs and programming languages recognize other operators that allow you to manipulate numbers and text in more sophisticated […]
- opt-in e-mail
A term that refers to promotional e-mails that have been requested by the individual receiving them. Unlike spam promotional e-mails that get sent out to large lists of recipients without regard to whether or not they want the information, opt-in e-mails are only sent to people who specifically request them. Opt-in e-mails are targeted and […]
- Optical Character Recognition
Often abbreviated OCR, optical character recognition refers to the branch of computer science that involves reading text from paper and translating the images into a form that the computer can manipulate (for example, into ASCII codes). An OCR system enables you to take a book or a magazine article, feed it directly into an electronic […]
- Optical Disk
A storage medium from which data is read and to which it is written by lasers. Optical disks can store much more data — up to 6 gigabytes (6 billion bytes) — than most portable magnetic media, such as floppies. There are three basic types of optical disks: CD-ROM :Like audio CDs, CD-ROMs come with […]