Database and Administration

What does Database mean?

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 the data and to enable a person or program to extract desired information^[1].

resource link: http://en.wikipedia.org/wiki/Database

The cycle of data processing

What is data processing?

Data processing (DP) is any computer process that converts data into information or knowledge.

In my own words:
How does data processing work?
For example, you are creationg a yahoo account, there, they will ask you some information, then you will give them the username you want. They will check there database if the name is available. If its available, then your done.

Understanding files and filenames

What are the definition of file, filenames, and extension?

File is a collection of data and information.
Filename is the label of the file.
Extension is found in the end of the filename. example: .doc, . jpg, etc.

in my own words:
Why is it important to assign a filename to your files?
It is important because when you have a filename it is easier to identify your file. If you don't have a filename you have to look into the data in the file to know what the file is about

Difference between data and information

What is the difference between data and information?

Data refers to a collection of organized information, usually the results of experience, observation or experiment, or a set of premises. This may consist of numbers, words, or images, particularly as measurements or observations of a set of variables.

Information is the knowledge of any subject. The concept of information is closely related to notions of constraint, communication, control, data, form, instruction, knowledge, meaning, mental stimulus, pattern, perception, and representation.

In my own words:
Data is organized information. It contains experiences, personal information, numbers, images, etc.
Information is the one that makes data. The experiences, personal details, images. etc. is called information.

Database Administration

Why is database administration important?
Database administration is important because they can store important personal fields thta can not be known by others. Like yahoo mail, you can trust it to keep your personal stuff.

Database Administration

Activity-files

Here is the hierarchy of file sizes

1byte=8 bit
1 KB= 1024 byte
1 MB= 1024KB
1 GB= 1024 MB
1 TB= 1024 GB

Last week in computer.....

.....class i learned:

Data is numbers, characters, images, or symbols that can be processed by a computer.

Information is interpreted data.

File is a collection of data and information.

Different kinds of files: data file

text file

program file

system file

directory file

Examples:

solitaire- program file

word pad- text file

folder- directory file

command.com- system file