Deck 15: Designing Accurate Data Entry Procedures

Question 1

Which is not a purpose for coding?

A) keeping track of something
B) classifying information
C) concealing information
D) creating information
E) revealing information

Answer 1

D

Question 2

A problem that occurs with classification codes is that:

A) there may not be enough letters to form a complete code.
B) the classifications may not be secure enough.
C) there may be several groups that have the same first letter.
D) the classifications are not easily understood since they are encrypted.
E) the data may not be recognized as belonging to any classes.

Answer 2

C

Question 3

In establishing a coding system, the analyst should do all except:

A) make codes that are diversified.
B) keep codes concise.
C) keep codes uniform.
D) allow for modification of codes.
E) make codes meaningful.

Answer 3

A

Question 4

Which code is necessary for instructing either the computer or the decision maker about what action to take?

A) function code
B) mnemonic code
C) classification code
D) simple sequence code

Question 5

Which code may be used to conceal or disguise information?

A) classification codes
B) alphabetic deviation codes
C) block sequence codes
D) simple sequence codes
E) cipher codes

Question 6

Which code indicates the approximate order that the data were entered?

A) classification codes
B) alphabetic deviation codes
C) block sequence codes
D) cipher codes
E) simple sequence codes

Question 7

Any code that helps the data entry person remember how to enter the data or the end-user remember how to use the information can be considered:

A) classification code.
B) significant-digit code.
C) mnemonic code.
D) block sequence code.

Question 8

Which method is useful for scoring answer sheets for survey questionnaires?

A) data strips
B) bar codes
C) punch out forms
D) mark sense forms
E) MICR

Question 9

The systems analyst can support accurate data entry through achievement of all these broad objectives except:

A) effective screen design.
B) effective and complete data capture.
C) efficient data capture.
D) assuring quality through validation.

Question 10

Classification codes are used to:

A) group data according to a common characteristic.
B) control the sequence of data by ensuring that a class of codes has all unique values.
C) disguise data within a classification, that is, ensure security for classified data.
D) encrypt data according to a security class.
E) enable users to understand the components or classes of data within a larger code.

Question 11

The code that is used to represent glyphs or syllables or whole words is:

A) block sequence.
B) unicode.
C) mnemonic code.
D) significant-digit.

Question 12

An advantage of using significant-digit codes is that:

A) the data may be easily concealed.
B) the code may be generated by auto-sequencing programs.
C) the code is short and quick to enter.
D) inquiries may be performed on a portion of the code.
E) the code combines the flexibility of data that is grouped and a sequence code.

Question 13

Which is a way to read input from a source document with an optical scanner rather than off the magnetic media?

A) mark sense forms
B) punch out forms
C) optical character recognition (OCR)
D) bar codes

Question 14

Which code is used to assign codes sequentially within a category?

A) classification codes
B) alphabetic deviation codes
C) block sequence codes
D) cipher codes
E) simple sequence codes

Question 15

Which code describes an object by its membership in many subgroups?

A) significant-digit codes
B) block sequence codes
C) cipher codes
D) mnemonic codes
E) function codes

Question 16

Codes in a GUI system may be stored:

A) in a database table.
B) as a database function.
C) as a pull-down list.
D) A and B above.
E) A and C above.

Question 17

A disadvantage of alphabetic derivation codes is that:

A) there is no meaning inherent in the code.
B) there may be names that do not have the minimum required number of consonants in the name or description.
C) there are not enough attributes in the data to form a code.
D) there is no way to obtain information from a part of the code.
E) there is no way to sort on any of the data.

Question 18

Why would a company issuing credit cards use a code that is much larger than the minimum length?

A) to allow for expansion, since the customer growth may increase exponentially
B) because the numbers are assigned sequentially and the codes should not use all possible numbers
C) so that a person would not be able to guess a credit card number and illegally use it to purchase goods
D) because the codes use the alphabetic derivation format
E) since the codes are used to do inquiries on the data within them

Question 19

The code used for pull-down menus in a GUI system is:

A) classification codes.
B) alphabetic deviation codes.
C) block sequence codes.
D) cipher codes.
E) simple sequence codes.

Question 20

Codes are:

A) used in GUI programs to ensure that codes keyed by the user are valid.
B) used in a validation program to ensure that only valid codes have been entered.
C) printed in reports.
D) displayed on screens.
E) All of the above.

Question 21

Coded data require less time to enter and reduce the number of items entered.

Question 22

Which of the following is used by radio frequency identification for automatic collection of data?

A) micro transmitting stations
B) transponders
C) cell phones
D) hand-held devices

Question 23

The ________ sequence code is an extension of the sequence code.

A) block
B) classification
C) significant-digit
D) numeric

Question 24

Which is not a possible way to validate input?

A) test for missing data
B) test for correct field length
C) test for accurate character data
D) test for comparison with stored data
E) using check digits

Question 25

One of the disadvantages of using 2D codes is:

A) the ease with which a printed code can be stickered over or tampered with.
B) that codes are readable without the use of specialized software.
C) the unreliability of the transponders used that may run out of power.
D) the minimum distance required to read the code.

Question 26

A sequence code eliminates the possibility of assigning the same number.

Question 27

________ means that the identification code for a customer should not change each time new data are received.

A) Stability
B) Reliability
C) Standards based
D) Sortable

Question 28

Data are unclear and not as readily interpretable when coding classes are not mutually:

A) exclusive.
B) elusive.
C) enforced.
D) inclusive.

Question 29

Value checks are performed for data that is:

A) continuous.
B) discrete.
C) cross-referenced.
D) using a check digit.
E) stored on a master file.

Question 30

A user enters the code directly into the terminal of a(n) ________ system or onto a source document of a batch system.

A) online
B) offline
C) documented
D) paper-based

Question 31

The code that is used to represent glyphs or syllables or whole words is called:

A) unicode.
B) function code.
C) alpha-numeric code.
D) mnemonic code.

Question 32

Credit card processing uses a check digit formula called the ________ formula.

A) RFID
B) modulus 3
C) Luhn
D) regular expression
E) DTD

Question 33

There are two types of data to enter: data that ________ every transaction, and data that concisely differentiate the particular item being processed from all other items.

A) change
B) filter
C) capture
D) remove

Question 34

When it is possible to describe a product via its membership in many subgroups, we can use a ________ code to help describe it.

A) significant-digit
B) block
C) cipher
D) numeric

Question 35

A random number should be used when order of processing requires knowledge of the sequence in which items enter the system or the order in which events unfold.

Question 36

Which of the following is a way to validate an XML document?

A) DTD
B) schema
C) Both of the above will validate an XML document.
D) None of the above will validate an XML document.

Question 37

Effective data ________ is achievable only if prior thought is given to what the source document should contain.

A) capture
B) entry
C) feedback
D) analysis

Question 38

A ________ code, rather than a random number, gives users an approximation of when the order was received.

A) sequence
B) alphabetic
C) simple
D) numeric

Question 39

The process of putting ambiguous or cumbersome data into short, easily entered digits or letters is called:

A) coding.
B) data entry.
C) data capture.
D) data analysis.

Question 40

Coding affords the ability to distinguish between classes of items.

Question 41

Classification codes should be listed in manuals or posted so that users can locate them easily.

Question 42

The code abbreviations in a mnemonic system must be frequently changed.

Question 43

Unicode is used to represent glyphs or syllables or whole words.

Question 44

If codes must be long, they should be broken up into subcodes.

Question 45

Only systems analysts need to know the cipher codes by heart.

Question 46

If codes change frequently or are somewhat unstable, they should be stored as a database function in a GUI system.

Question 47

Bar codes encode text, graphics, and data into small rectangular dots on a narrow strip of paper.

Question 48

To be useful, classes must be mutually inclusive.

Question 49

One reason for revealing information through codes is to make the data entry more meaningful.

Question 50

The Luhn formula is designed to catch every transposition error.

Question 51

Active RFID tags are much less reliable because they depend on their own power supply, which may fail.

Question 52

A pattern that contains symbols representing the type of data that must be present in a field is called a character map.

Question 53

Any code that helps the data-entry person remember how to enter the data or the end-user remember how to use the information can be considered an alphabetic derivation code.

Question 54

Credit card processing uses a check digit formula called the Luhn formula.

Question 55

The analyst must assume that errors in the data will not occur.

Question 56

A test for range or reasonableness works if there are only a few valid values, and it is feasible for situations in which values are not restricted and predictable.

Question 57

Radio frequency identification allows the automatic collection of data using RFID tags or transponders that contain a chip and an antenna.

Question 58

Numeric codes are much easier to sort than alphanumerics.

Question 59

When using codes in a GUI interface, they should only be selected using a check box.

Question 60

Keep codes uniform among, as well as within, programs.

Question 61

What is the purpose of using a mnemonic code for data?

Question 62

A value check is used when one element has a relationship with another one.

Question 63

XML documents may be validated by comparing them to a DTD or a schema.

Question 64

A pattern that contains symbols that represent the type of data that must be present in a field is called a regular expression .

Question 65

Bar codes appear on any person or object that needs to be checked into and out of any kind of inventory system.

Question 66

Radio frequency identification allows the automatic collection of data using tags or transponders that contain a chip and an antenna.

Question 67

List five of the eight data entry methods mentioned in the book.

Question 68

What is a simple sequence code? Give an example of how this code could be used.

Question 69

Ensuring the quality of the data input to the information system is critical to ensuring quality output.

Question 70

List the four objectives that a systems analyst can use to support accurate data entry.

Question 71

There are three main problems that can occur with input transactions: submitting the wrong data to the system, submission of data by an unauthorized person, or asking the system to perform an unacceptable function.

Question 72

Value checks are usually performed for any data.

Question 73

A method for validating credit cards uses a check digit formula called the Kendall formula.

Question 74

Data entered at the point of sale are reused throughout the entire order fulfillment process in a(n) ecommerce system.

Question 75

What are the four improvements to data accuracy that transactions conducted over ecommerce Web sites can offer?

Question 76

An XML DTD is much more powerful than a schema.

Question 77

In an ecommerce system, data is generally entered into the system by the programmer.

Question 78

Use the stored data system to prevent the mistake that the intended number 53411 is typed in as number 54311 instead.

Question 79

A mathematical process of assuring data accuracy involves multiplying each of the digits in the original code by some predetermined weights, summing these results, and then dividing this sum by a modulus number.

Question 80

Accuracy is improved by better feedback.