Computer definition what is ?

What is a Computer definition ?

Computer word come from compute .A computer is electronic device that take data and instruction as an input from user and perform operation or process on data ,give the result . result is know as out put.
1-A computer is a machine that manipulates data according to a set of instructions
2-A computer is defined as ‘an automatic electronic apparatus for making calculations or controlling operations that are expressible is numerical or logical terms.
3-A machine for performing calculations automatically.
4-”computer” is a collection of devices that function as a unit. The most basic collection includes a Computer CPU, a Monitor, a Keyboard, and a Mouse.
5-A computer is a machine for manipulating data according to a list of instructions know as a program.
Data: Data means raw facts
Example;-mark sheets of student
Information : information is processed data that contains meaningful message.
Data Process Information
Process can be of mathematical example addition ,subtraction or logical example sorting ,searching .
Note-
1-Data is raw facts such as phone numbers or addresses, and information is the organization of these raw facts into a meaningful manner.
2-The relationship between data and information is very much interconnected and without data there could be no information.

What is Oracle Database?

What is Oracle Database?
An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management. In general, a server reliably manages a large amount of data in a multiuser environment so that many users can concurrently access the same data. All this is accomplished while delivering high performance. A database server also prevents unauthorized access and provides efficient solutions for failure recovery.

Oracle Database is the first database designed for enterprise grid computing, the most flexible and cost effective way to manage information and applications. Enterprise grid computing creates large pools of industry-standard, modular storage and servers. With this architecture, each new system can be rapidly provisioned from the pool of components. There is no need for peak workloads, because capacity can be easily added or reallocated from the resource pools as needed.

The database has logical structures and physical structures. Because the physical and logical structures are separate, the physical storage of data can be managed without affecting the access to logical storage structures.