Data is a collection of facts and figure. data can be any text, number image etc.
Data have following types:-
- Numerical Data (or quantitative data)
- Alphabetic data
- Alphanumeric Data
- Numerical data (or quantitative data):-
Data measured or identified on a numerical scale. Numerical data can be analyzed using statistical methods, and results can be displayed using tables, histograms and graphs.
For Example:-
A researchers will ask a questions to a participant that include words how often, how many or percentage. The answers from the questions will be numerical. Having decimal values 45 -94 etc.
The type of data which consists of alphabets is called Alphabetic Data. It may contains alphabetic letters both upper and lower case.
Alphanumeric (sometimes shortened to alphanumeric Data) is a combination of alphabetic and numeric characters, and is used to describe the collection of Latin letters and Arabic digits or a text constructed from this collection. There are either 36 (single case) or 62 (case sensitive) alphanumeric characters. The alphanumeric character set consists of the number 0 to 9 and letters A to Z. In the Perl programming language, the underscore character ( _ ) is also considered to be a member of the alphanumeric set of characters.
Refers to a class of programs that organize and manipulate data, usually large amount of numeric data. Accounting programs are the prototypical examples of data processing applications. In contrast, word processors, which manipulate text rather than numbers, are not usually referred to as data processing applications.
- Electronic data processing:-
Electronic data processing is any process that a computer program does to enter data and summaries, analyze and otherwise convert data into usable information. The process may be automated and run on a computer data processing systems typically manipulate raw data into information, and likewise information systems typically take raw data as input to produce information as output.
