Exam 15: Designing Accurate Data Entry Procedures

An advantage of using significant-digit codes is that:

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.

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

Coding affords the ability to distinguish between classes of items.

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

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.

The Luhn formula is designed to catch every transposition error.

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.

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

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

A problem that occurs with classification codes is that:

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

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

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

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

To be useful,classes must be mutually inclusive.

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

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

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

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.