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Data on a Touch Pad

RDBMS FUNDAMENTALS

DATA

•    Data are the raw, facts and figures that cannot identify an object uniquely.
•    It is the plural form of the Latin word datum.
•    Data are collected by systematic survey or review on a particular activity.
•    It can be represented by a name, number, symbol or character, etc.
•    Example:- sunil, 7, $, etc.

Types of data

•    There are following types of data:-
    1.    Simple data
    2.    Composite data
    3.    Qualitative data
    4.    Quantitative data

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1.    Simple data:-
    o    A data that consist of alphanumeric characters are called as simple data.
    o    It contains alphabets and digits.
    o    Example:- 354ND071

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2.    Composite data:-
    o    A data that consist of text, audio, video, images, animation, graphics is called as composite data.
    o    Example:- movie, song.

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3.    Qualitative data:-
    o    The data which can be measured by human feelings but can’t be represented by any number or units are called as qualitative data.
    o    Example:- good, bad, love, happy, honesty, etc.

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4.    Quantitative data:-
    o    The data which can be represented by number or units but can’t be measured by human feelings are called as quantitative data.
    o    Example:- length, time, force, weight, etc.
 

INFORMATION

•    Information is the processed form of data.
•    When raw data are processed and arranged in a proper sequence, then it is called as information.
•    It gives a meaning.
•    Example:- Mark sheet of a student.
•    The following are various characteristics of information:-
    i.      Relevance
    ii.     Subjectivity
    iii.    Accuracy
    iv.    Completeness
    v.     Timeliness
    vi.    Availability

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