3615928
Description
DATA
- Method of
Ensuring
Data
Correctness
- Data Verification
- (A method to check the input for errors)
- Proof-Reading
- The person entering the
data simply reads through
what they have entered to
check it is correct or not.
Usually checked with the
original copy.
- The person entering the
data simply reads through
what they have entered to
check it is correct or not.
Usually checked with the
original copy.
- Double-Entry
- The data is entered twice.
The computer compares the
data, and anything that
doesn't match is questioned.
- The data is entered twice.
The computer compares the
data, and anything that
doesn't match is questioned.
- Proof-Reading
- (A method to check the input for errors)
- Data
Validation (Is it
logical?)
- Presence- Check
- It is a check
to see if the
data is
entered.
- E.G: You forgetting to
type
ponylover43@yahoo.com.sg
in the E-mail section. Then
there is a warning that
says you need to type it
in.
- This is
too basic
for an
answer.
Better
not
write it
as an
answer.
- This is
too basic
for an
answer.
Better
not
write it
as an
answer.
- E.G: You forgetting to
type
ponylover43@yahoo.com.sg
in the E-mail section. Then
there is a warning that
says you need to type it
in.
- It is a check
to see if the
data is
entered.
- Format-Check
- It checks whether the
data is in the correct
format.
- E..G:date
should be in
DD/MM/YYYY
(Not like USA)
- E..G:date
should be in
DD/MM/YYYY
(Not like USA)
- It checks whether the
data is in the correct
format.
- Check-Digit
- Used for numerical
data. An extra digit
is added to a
number which is
calculated from the
digits. The
computer checks
this calculation
when data are
entered
- E.G:
IDK
- E.G:
IDK
- Used for numerical
data. An extra digit
is added to a
number which is
calculated from the
digits. The
computer checks
this calculation
when data are
entered
- Character-Type
Check
- Character type
check is a check to
make sure only
certain types of
characters are in
the data.
- E.G: A name should not have
numbers.
- E.G: A name should not have
numbers.
- Character type
check is a check to
make sure only
certain types of
characters are in
the data.
- Range-Check
- A range check is a
check to make sure
a number is within
a certain range.
- E.G: A driver's age should be 17 to 99.
- When you fake your birthday and
you still are not old enough for
Facebook.
- When you fake your birthday and
you still are not old enough for
Facebook.
- E.G: A driver's age should be 17 to 99.
- A range check is a
check to make sure
a number is within
a certain range.
- Presence- Check
- Data Verification
- Data Process
- Batch Processing
- Batch processing is where the data is
collected first, and then at a certain
period of time, usually after a month,
the data will be updated.
- Batch processing is where the data is
collected first, and then at a certain
period of time, usually after a month,
the data will be updated.
- Real-time Process
- Real-time
Processing is
where the data is
collected and
updated on the
spot.
- Real-time
Processing is
where the data is
collected and
updated on the
spot.
- Batch Processing
- Data Collection
- Open-Loop
- Sensor
- Analog to Digital
Converter(ADC)
- Computer
- Computer
- Analog to Digital
Converter(ADC)
- The sensor detects a change in
value. Then, it will send a signal
to the ADC, which will convert
the signal from analog to digital
for the computer to interpret.
Then it will send a signal to the
computer. The computer will
display the signal, showing that
there is a change in the value.
- Sensor
- Open-Loop
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