Term
|
What is a Data Capture Form?
|
|
Definition
|
A form designed specifically to collect data
|
|
|
Term
| What are 3 areas of a Data Capture Form?
|
|
Definition
♥ Personal Details
♥ Medical
♥ For Office Use Only |
|
|
Term
Data Logging
Scientists use computers to collect data.
Give 3 Examples
|
|
Definition
♥ Climatic Data over a long period
♥ Temperature changes during a chemical process
♥ Radiation output from a star
|
|
|
Term
|
Give 5 advantages of Data Logging
|
|
Definition
♥ Automated - no supervision required
♥ Accurate
♥ Data can be collected over long ro short periods of time
♥ Data can be stored for later analysis
♥ Graphs can be plotted automatically
|
|
|
Term
Data Logging
What are Sensors?
|
|
Definition
| Input devices that convert physical quantities to electrical voltage. Sensors have to be connected through an analogue to digital converter (Interface Box)
|
|
|
Term
Data Logging
Give an example of the use of a Pressure Sensor
|
|
Definition
| To detect burglars as part of a burglar alarm system
|
|
|
Term
|
What does an Infra Red sensor do? |
|
Definition
|
|
Term
Data Logging
What does a Thermistor do?
|
|
Definition
| Reacts to temperature - Scientific experiments and ovens
|
|
|
Term
Data Logging
What does a pH sensor do?
|
|
Definition
| Detects acidity and alkalinity
|
|
|
Term
| What is the Period of Logging?
|
|
Definition
| The total time over which data is collected
|
|
|
Term
| What is the Logging Interval?
|
|
Definition
| The time between each piece of data being collected
|
|
|
Term
| What does the Data Protection Act cover?
|
|
Definition
♥ The storage of personal data on computer systems only
♥ Data must be about identifiable, living individuals.
|
|
|
Term
| What does the Data Protection Act not cover?
|
|
Definition
♥ Data held simply for accounting purposes
♥ The data stored on manual systems
|
|
|
Term
|
Definition
♥ People or companies who hold and process personal data on computer systems
♥ Data users must register with the Data Protection Registrar
|
|
|
Term
|
Definition
♥ The individual who's data is held by a company
♥ Data subjects have rights under the Data Protection Act
|
|
|
Term
| Give 4 exemptions from the Data Protection Act
|
|
Definition
♥ Simple data held for payroll or accounting purposes
♥ Statistical data that doesn't identify an individual
♥ If the data subject is in danger (Doctors given access in a medical emergency)
♥ Can be bypassed by certain government agencies (national security, crime or taxation)
|
|
|
Term
| The Rules of the Data Protection Act - Part 1
|
|
Definition
♥ Data must be acquired and processed lawfully
♥ Personal data cannot be passed onto other organisations without consent
♥ Data must be used for stated purpose
♥ The data held should be the minimum for the purpose
|
|
|
Term
| The Rules of the Data Protection Act - Part 2
|
|
Definition
♥ Data should not be kept longer than is necessary
♥ Personal Data should be accurate and up to date
♥ Subjects must be aware of the data held on them be able to check its accuracy
♥ Security must be provided to protect data
|
|
|
Term
| Give the 3 rights of a Data Subject
|
|
Definition
♥ You can ask a company if they hold any data about you
♥ You can ask a company to show you what data they hold on you. The request must be in writing and the company may charge a sum
♥ You can ask to have data updated if it is out of date
|
|
|
Term
|
Definition
|
A structured collection of data used as information and can be searched using queries
|
|
|
Term
|
What are the 3 levels of a Database?
|
|
Definition
♥ Fields
♥ Records
♥ Files
♥ Key Fields
|
|
|
Term
Databases
What is a Field?
|
|
Definition
|
The columns. The field contains the field name and the data (columns)
|
|
|
Term
Databases
What is a Record?
|
|
Definition
|
The rows. All the information about one entity.
|
|
|
Term
Databases
What is a File?
|
|
Definition
|
All the information about one subject
|
|
|
Term
Databases
What is a Key Field?
|
|
Definition
|
A unique field that is used to identify a record
|
|
|
Term
|
What are the 4 types of data?
|
|
Definition
♥ Alphanumeric (Text)
♥ Numeric(Number)
♥ Date
♥ Boolean
|
|
|
Term
|
What is Alphanumeric data?
|
|
Definition
Any keyboard character
(Phone numbers are Alphanumeric!!)
|
|
|
Term
|
Definition
|
This type of field holds numbers and any calculations
|
|
|
Term
|
Definition
|
This type of field can only have two answers e.g. (Yes/No, True/False)
|
|
|
Term
Databases
What are fixed length records?
|
|
Definition
|
Records that are a certain size. This makes searching easier but wastes memory.
|
|
|
Term
Databases
What are variable length records?
|
|
Definition
|
Only the data is stored. No space is wasted but searching is slower.
|
|
|
Term
|
Definition
|
Data has no meaning itself as it has no context
|
|
|
Term
|
Definition
|
Information has meaning as it is in context
|
|
|
Term
|
Definition
|
A check to ensure that the data entered is reasonable
|
|
|
Term
Validation
What is a Range Check?
|
|
Definition
|
Checks if data falls within certain limits e.g. >1 and <100
|
|
|
Term
Validation
What is a Length Check?
|
|
Definition
| The field is set to only allow a certain number of characters
|
|
|
Term
Validation
What is a Presence Check?
|
|
Definition
|
Ensures that something must be entered into the field
|
|
|
Term
Validation
What is a Unique Check?
|
|
Definition
|
No two records can have the same value in this field. (MUST be used in key field)
|
|
|
Term
Validation
What is a Type Check?
|
|
Definition
|
Ensures that data type is only what is expected
|
|
|
Term
Validation
What is a Format Check/Input Masks?
|
|
Definition
|
Ensures data is in correct format e.g. Car Reg
|
|
|
Term
Validation
What are Lookup Boxes/Drop Down Lists?
|
|
Definition
|
Useful when there is a limited number of possible entries
|
|
|
Term
|
What does EPOS stand for?
|
|
Definition
|
|
Term
|
How is EPOS used in supermarkets?
|
|
Definition
When an item is scanned at the till, the product is looked up in the database.
1) Itemised receipt can be produced
2)Automatically reduces stock count
|
|
|
Term
|
What does EFTPOS stand for?
|
|
Definition
|
Electronic Fund Transfer at Point of Sale
|
|
|
Term
|
How is EFTPOS used in supermarkets?
|
|
Definition
|
Cashless Transactions - Credit/Debit card is swiped and cash is transferred from shopper's account to shop’s account. May allow cashback.
|
|
|
Term
|
Advantages of EPOS to shopper - Part 1
|
|
Definition
♥ Quicker than tilling each price - shorter queueing time
♥ Tiller cannot type incorrect price
♥ Offers quickly worked out by till
♥ Price check machines around shop
|
|
|
Term
|
Advantages of EPOS to shopper - Part 2
|
|
Definition
♥ Itemised Receipts
♥ Fresher goods - improved stock control
♥ Loyalty Cards - Shop uses cards to see what you buy!
|
|
|
Term
|
Advantages of EPOS to shop
|
|
Definition
♥ Tiller makes fewer mistakes with price and number of items
♥ Less waste - only the goods that have been bought are replaced
♥ Loyalty Cards to see what people buy
♥ Point schemes encourage shoppers to return
|
|
|
Term
|
Advantages of IT in Supermarkets to Employees
|
|
Definition
♥ Salaries paid directly into bank accounts
♥ Money is safe and protected to an extent from theft
♥ Record of payment shown on bank statement
|
|
|
Term
|
Advantages of IT in Supermarkets to Employees
|
|
Definition
♥ Safer than handling large sums of cash
♥ Automated payroll is cheaper than employing wages staff
|
|
|
Term
|
What are Manual Input Devices?
|
|
Definition
Used when flexibility is needed:
♥ Keyboards
♥ Touch Screen
♥ Mouse
♥ Keypad (ATM Machines)
♥ Microphone
♥ Concept Keyboard(McDonalds)
|
|
|
Term
|
Name 4 Automatic Input Devices
|
|
Definition
♥ Bar Code Reader
♥ OMR Optical Mark Recognition
♥ OCR Optical Character Recognition
♥ MICR Magnetic Ink Character Recognition
|
|
|
Term
|
What is a Bar Code Reader?
|
|
Definition
|
A light scanner or pen that reads Bar Codes. These Store an items identity number
|
|
|
Term
|
Definition
|
Where marks on a piece of paper are read by machine e.g. Lottery, Multiple Choice Exams
|
|
|
Term
|
Definition
|
Where characters are recognised as letters - must be able to recognise different fonts
|
|
|
Term
|
Definition
|
Used for the numbers on cheques. They make fraud difficult and expensive
|
|
|
Term
|
Definition
♥ VDU Visual Display Unit
♥ Plotters
♥ Loudspeakers
♥ Motors
|
|
|
Term
|
Definition
♥ Laser
♥ Inkjet
♥ Dot Matrix
♥ Thermal
|
|
|
Term
|
Definition
♥ All purpose
♥ Quite expensive (Toner is expensive)
♥ Very good quality
♥ Quiet Operation
|
|
|
Term
|
Definition
♥ Low Volume all purpose
♥ Cheap but uneconomic for big print runs
♥ Good quality and affordable colour output
|
|
|
Term
|
Definition
♥ Wage slips and Bills
♥ Cheap
♥ Works by impact - useful when carbon copies are required
|
|
|
Term
|
Definition
♥ Supermarket Receipts
♥ Cheap
♥ Needs Special Paper
|
|
|
Term
|
Name 4 Drawbacks of the Internet
|
|
Definition
♥ Undesirable Material
♥ Security
♥ Finding Information
♥ Filtering
|
|
|
Term
|
What is Undesirable Material?
|
|
Definition
♥ Offensive Material
♥ Misleading Material
♥ Unreliable Material
♥ Plain Nonesense
|
|
|
Term
|
How does undesirable material help terrorists?
|
|
Definition
♥ Terrorists have been able to find out how to make weapons
♥ They can also exchange information
|
|
|
Term
|
How does undesirable information help criminal activities?
|
|
Definition
♥ They can organise meetings
(However not all groups on the internet are bad)
|
|
|
Term
|
How does undesirable information encourage hatred and racism?
|
|
Definition
|
♥ Material promoting hate and racism can be easily published and found on the internet
|
|
|
Term
|
Why are there no laws to govern undesirable material?
|
|
Definition
♥ Every country has different laws
♥ Information can be illegal in one country but legal in another
♥ It is becoming impossible to police
|
|
|
Term
|
How is sending data over the internet unsecure?
|
|
Definition
♥ Data can travel by any route to any destination
♥ This means it can be easily intercepted and read
|
|
|
Term
|
What is done to make sending information over the internet more secure?
|
|
Definition
|
|
Term
|
How is unauthorised
access to your machine, from elsewhere on the internet prevented? |
|
Definition
|
|
Term
| Why is it difficult to find the information you want on the internet? |
|
Definition
|
Because of the large amount of information
|
|
|
Term
| How do search engines work?
|
|
Definition
♥ Some look for headings
♥ Some look inside the web sites
♥ Some just search other search engines
|
|
|
Term
|
What is filtering used for?
|
|
Definition
♥ Blocking access to certain sites
♥ Preventing sites showing certain images or information
|
|
|
Term
| What is the downside of filtering? |
|
Definition
♥ Not all sites can be blocked
♥ So the success is limited
|
|
|
Term
|
What are the 5 benefits of the internet? |
|
Definition
♥ Up to date
♥ Multimedia
♥ Accesible
♥ Good for customers
♥ Good for business |
|
|
Term
|
The internet is up to date, BUT...
|
|
Definition
|
Some sites are never updated
|
|
|
Term
|
Most people in the world have access to internet and the cost of connection is constantly decreasing BUT...
|
|
Definition
♥ Some people cannot afford equipment
♥ Many peoples don't have access to the required infrastructure
|
|
|
Term
|
The internet is good for customers because...
|
|
Definition
♥ people can shop whenever it is convenient for them
♥ wide range of goods are availible
♥ prices are cheaper
♥ delivery rapid as stock kept at cheap locations |
|
|
Term
|
The internet is good for businesses because...
|
|
Definition
♥ it's good for advertising
♥ communicating with other businesses
♥ communicating with customers
♥ displaying full details of goods and services
♥ entering possibly global markets
|
|
|
Term
|
How can computers be misused?
|
|
Definition
♥ copying material
♥ hacking into information
♥ viruses
♥ playing games at work
♥ visiting questionable websites
♥ circulating offensive emails
|
|
|
Term
|
It is easier to misuse info stored electronically rather than in a filing cabinet because...
|
|
Definition
♥ Info can be altered without leaving a trace
♥ Info can be searched through quickly
♥ Info can be accessed from anywhere in the world
♥ Info can be copied and taken elsewhere
|
|
|
Term
|
Definition
|
Software that replicates itself and can cause problems to other software or systems
|
|
|
Term
|
Definition
|
The unauthorised access of a computer system or its data
|
|
|
