Question 1

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

Accepted Answer

The answer of What is the purpose of using a...

Question 2

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

Accepted Answer

A value check is used to ensure that data entered into a system meets certain criteria or constraints, not specifically to check relationships between elements.

Question 3

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

Accepted Answer

XML documents can be validated by comparing them with a DTD (Document Type Definition) or a schema, which define the structure, content, and data types allowed in the document. The validation process checks if the document conforms to the rules specified in the DTD or schema.

Question 4

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

Accepted Answer

This is the definition of a regular expression - a pattern that describes the type of data that must be present in a field.

Question 5

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

Accepted Answer

Bar codes are commonly used in various inventory systems to keep track of items and people.

Question 6

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

Accepted Answer

Radio frequency identification uses tags or transponders with a chip and antenna to automatically collect data.

Question 7

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

Accepted Answer

The answer of List five of the eight data entry...

Question 8

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

Accepted Answer

The answer of What is a simple sequence code? Give...

Question 9

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

Accepted Answer

Data input is the foundation of any information system. If the data input is inaccurate or incomplete, the output will not be reliable or useful. Therefore, ensuring the quality of data input is crucial to ensuring quality output from the information system.

Question 10

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

Accepted Answer

The answer of List the four objectives that a systems...

Question 11

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.

Accepted Answer

These are the three main problems that can occur with input transactions.

Question 12

Value checks are usually performed for any data.

Accepted Answer

The answer of Value checks are usually performed for any...

Question 13

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

Accepted Answer

There is no known credit card validation check digit formula called the Kendall formula.

Question 14

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

Accepted Answer

Data entered at the point of sale, such as customer information and order details, are typically reused throughout the entire order fulfillment process in an ecommerce system to streamline operations and improve efficiency.

Question 15

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

Accepted Answer

The answer of What are the four improvements to data...

Question 16

An XML DTD is much more powerful than a schema.

Accepted Answer

This statement is not correct. XML Schema is actually more powerful than DTD in terms of functionality and features. XML Schema allows more complex data types, constraints, and namespace declarations compared to DTD.

Question 17

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

Accepted Answer

Data can be entered into an ecommerce system by various stakeholders such as customers, vendors, and administrators, in addition to programmers.

Question 18

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

Accepted Answer

Stored data systems can help identify and correct errors, but they cannot prevent all typing mistakes. They can suggest corrections based on patterns or previous data, but human input is still required to verify and apply these corrections.

Question 19

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.

Accepted Answer

This is the process of computing a check digit or checksum to ensure data accuracy.

Question 20

Accuracy is improved by better feedback.

Accepted Answer

Better feedback helps individuals to correct the mistakes or errors in their tasks, which eventually improves their accuracy.

Quiz 15: Designing Accurate Data Entry Procedures