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All repetitive data is redundant data Completely explain why yo

All repetitive data is redundant data Completely explain why yo

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\"All repetitive data is redundant data.\" Completely explain

why you agree or disagree. Be sure to include examples.

This is a study guide question for my \"introduction to

Database\" class. Thanks for any help.

Solution

Data redundancy:

Data

Data is the set of values of some information. Data is

measured, collected and reported and analyzed or

whenever it can be visualized using graphs or image or

table.

Redundancy

Redundancy means exceeding what is necessarily in

natural or more than enough times so that we may not

need them.

Data redundancy

Data redundancy is a data organization issue that allows

the unnecessary duplication of data within the database.

(or )

Data redundancy is the repetition of data.

With related to Database data redundancy means that

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some data fields are repeated. This data repletion may be

if a field can repeated within the table or repeated in two

or more tables. Data can appear multiple times in a

database for various reasons.

Eg.

Let us consider an example of school database. The name

of the database is Students. This database stores the

information of student like, regd no, student_name, father’s

name, dob, address and contact number etc.

Now there is another table which contains fees information

of student with fields like student_name, month, amount,

paid date etc.

Also there is another table called marks which stores

marks information of students. Here fields are

student_name, class, section, rollno, different

subjectsmarks etc.

In this situation we have different tables and have

repeated field i.e. namefield i.e student_name in student

table and other two tables fees and marks also contains

fileds student_name. Infact the field student_name in fees

table and marks table repeats the same data i.e the name

of the any student two or more times unnecessarily. This is

called data redundancy. This is the data redundancy in

multiple tables.

Data redundancy in single table.

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\"All repetitive data is redundant data. \" Completely explain why you agree or disagree. Be sure to include examples. This is a study guide question for my \"introduction to Database\" class. Thanks for any help. Solution Data redundancy: Data Data is the set of values of some information. Data is measured, collected and reported and analyzed or whenever it can be visualized using graphs or image or table. Redundancy Redundancy means exceeding what is necessarily in natural or more than enough times so that we may not need them. Data redundancy Data redundancy is a data organization issue that allows the unnecessary duplication of data within the database. (or ) Data redundancy is the repetition of data. With related to Database data redundancy m eans that some data fields are repeated. This data repletion may be if a field can repeated within the table or repeated in two or more ta ...
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