information processing..

Question 1

what is data?

Answer 1

raw facts or figures

Question 2

what is information?

Answer 2

data that has been processed into a meaningful form

Question 3

what are the sources of data?

Answer 3

1. source documents
2. human readable document
3. machine readable document
4. turnaround document

Question 4

what is a source document?

Answer 4

a document that contains data for input into an information processing system

Question 5

what are some examples of a source document?

Answer 5

application form, survey, invoice, online forms, bank deposits

Question 6

what is a human readable document?

Answer 6

may be read by a human but not in the form that that a computer can automatically accept as input

Question 7

examples of a human readabke document?

Answer 7

handwritten documents

Question 8

what are machine readable documents?

Answer 8

a document that can be read directly and understood by computer systems

Question 9

what are some examples of machine readable documents?

Answer 9

qr code, barcode, cheque and online forms

Question 10

what are turnaround ddoucments?

Answer 10

a printed document that has been outputted by a computer system and contains machine readable objects that will allow the same document to provide input into a computer system

Question 11

what are some examples of a turnaround document?

Answer 11

parking ticket, utility bill

Question 12

what is reliability of information?

Answer 12

the degree or extent to which the content of the information an be depended on to be accurate

Question 13

what are the characteristics of reliability?

Answer 13

• authenticity
• relevance
• currency
• bias/lack of bias

Question 14

what is authenticity?

Answer 14

information must be true or real

Question 15

what is relavence?

Answer 15

information is connected or appropriate to its use

Question 16

what is currency?

Answer 16

has the quality of belonging to the present time and is not out of date.

Question 17

what is bias or lack of bias?

Answer 17

information has been judge fairly and is not influenced by personal feelings and opinions

Question 18

what is data verification?

Answer 18

the process during which data that has already been inputted or captured is checked to ensure that it matches data on the source document.

Question 19

what are the methods of data verification?

Answer 19

1. proof reading
2. double entry

Question 20

what is proofreading?

Answer 20

the manual method of visually checking what was entered against a source document to ensure that they are identical.

Question 21

what is double entry?

Answer 21

data is entered twice; by a second person

Question 22

what is data validation?

Answer 22

a checking process in a program which is aimed at finding out if the data is genuine

Question 23

what are the methods of validation?

Answer 23

1. range check
2. data type check
3. presence check
4. format check
5. resoanableness check

Question 24

what is range check?

Answer 24

this is ensures that data entered falls within a specific range by checking an input vale is within a pre-determines range at values

Question 25

what is data type check?

Answer 25

this ensures that data entered in a field is correct far the dat type defines by comparing an input value with the type of data permissible

Question 26

what is presence check?

Answer 26

this ensures that data has been entered into a field by enforcing rules that the field cannot be left blank

Question 27

what is a format check?

Answer 27

this ensures that data is supplied in the expected form by checking the character type entered in each position in a field