AS-IT-REVCH#01

​Revision ch#1

​Objectives

​Students should understand and revise:
What is data?

What is Information?

What is Knowledge?
Factors that affect the quality of

information
Encryption
Checking the accuracy of data
Methods (batch, online, real-time)

Multiple Choice

Data is?

• Raw fact and figures

• Processed information

Open Ended

Type

Open Ended

Type

Draw

Tick

Open Ended

Type

Open Ended

Type

​Look up Check as data enterd in cell with rule and data is compared to entries in table

Draw

Tick

Open Ended

Describe, using the Oaters record as an example, the steps the computer would follow to update the Product file after a point of sale terminal reads the bar code for a packet of Oaters.

​The computer searches for the bar code number 5022476130067 in the product file When the matching record is found, the number in stock, 131, is reduced by one to 130 The number in stock, 130, is now compared with the re-order level, 130 If the number in stock is equal to the reorder level… … which it is, then the computer creates an order automatically The computer reads the reorder quantity, 250, needed for the product It reads the supplierID, B671841, for Oaters It searches the supplier file for the record corresponding to the supplier ID, B671841, read from the Product file The order/e-mail is automatically sent to the supplier… …using the supplier’s contact details from the Supplier file, [e-mail]

Open Ended

type