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Cdp Blog

  1. 1. Commercial Data Processing Mr Arthur
  2. 2. 1. Aims of the Lesson <ul><li>What is CDP? </li></ul><ul><li>Advantages of using computers </li></ul><ul><li>Data V Information </li></ul><ul><li>The Data Processing Cycle </li></ul>
  3. 3. What is CDP? <ul><li>CDP is the processing of large volumes of data, using large Mainframe Computer systems </li></ul><ul><li>CDP requires a Mainframe and Terminals </li></ul><ul><li>Examples </li></ul><ul><ul><li>Airlines </li></ul></ul><ul><ul><li>Supermarket </li></ul></ul><ul><ul><li>National Lottery </li></ul></ul>
  4. 4. Advantages of CDP <ul><li>Orders processed faster than manual system </li></ul><ul><li>Errors are less likely </li></ul><ul><li>Easy to hold customer information </li></ul><ul><li>Direct mailings can be sent to customers </li></ul>
  5. 5. Data V Information <ul><li>Information has a meaning for example 15 th of February 2007 </li></ul><ul><li>Data does not mean anything, for example 15022007 </li></ul><ul><li>Information (for people) = data (for computers) with a meaning </li></ul>
  6. 6. Data Collection and Data Preparation <ul><li>The first stage is to collect the data that is to be processed. </li></ul><ul><li>This data is then prepared in such a way that the computer can understand it </li></ul><ul><li>Examples = Order Forms/Lottery tickets </li></ul>
  7. 7. Data Collection Methods <ul><ul><li>Bar Codes </li></ul></ul><ul><ul><li>Mark Sense Cards </li></ul></ul><ul><ul><li>Magnetic Stripe </li></ul></ul>
  8. 8. Country Manufacturer Product Check Digit
  9. 9. Data Collection Methods <ul><ul><li>Smart Cards </li></ul></ul><ul><ul><li>Magnetic Ink Character Recognition </li></ul></ul>
  10. 10. Data Processing Cycle Data Collection and Data Preparation Data Input Data Processing and Storage Data output
  11. 11. Data Input - Bar Codes <ul><li>A bar code is a set of lines of varying widths which can be read by passing a bar code reader across them. </li></ul>
  12. 12. Data Input - Mark Sense Cards <ul><li>Mark Sense cards are cards divided into columns that allow spaces for marking with a pencil line. T he marks are then read automatically by a computer </li></ul><ul><li>Examples </li></ul><ul><ul><li>Lottery cards/Multiple Choice exam papers/Hospital Food Ordering </li></ul></ul>
  13. 13. Magnetic Stripe <ul><li>A magnetic stripe is a narrow band of magnetic material on which data is held </li></ul><ul><li>This stripe can hold 64 characters of data </li></ul><ul><li>Examples </li></ul><ul><ul><li>University registration cards </li></ul></ul><ul><ul><li>Esporta access card </li></ul></ul><ul><ul><li>Blood donor card </li></ul></ul>
  14. 14. Smart Cards <ul><li>A smart card has its own processor, and is able to store much more information than fits on a magnetic stripe </li></ul><ul><li>May have between 16-64 kilobytes of data </li></ul><ul><li>Examples </li></ul><ul><ul><li>Store loyalty cards </li></ul></ul><ul><ul><li>Chip and pin debit cards </li></ul></ul><ul><ul><li>Store cards </li></ul></ul>
  15. 15. Character Recognition <ul><li>Magnetic Ink Character Recognition </li></ul><ul><ul><li>Characters are printed in Magnetic Ink, for example, at the bottom of a cheque </li></ul></ul><ul><ul><li>When a cheque is paid in, a magnetic ink character reader is used to input the information to the computer system </li></ul></ul><ul><li>Optical Character Recognition </li></ul><ul><ul><li>Optical Character Recognition is where a device reads characters directly into a computer like a scanner </li></ul></ul>
  16. 16. Revision of CDP <ul><li>What is Commercial Data Processing? </li></ul><ul><ul><li>Using computer systems to handle large amounts of data </li></ul></ul><ul><li>Examples of CDP </li></ul><ul><ul><li>Supermarkets/Banks/National Lottery </li></ul></ul><ul><li>What are the advantages of using computers to process data rather than humans </li></ul><ul><ul><li>Orders processed faster </li></ul></ul><ul><ul><li>Less Errors </li></ul></ul><ul><ul><li>Easier to hold customer information </li></ul></ul><ul><li>Data V Information </li></ul><ul><ul><li>Data has no meaning e.g 18011981 </li></ul></ul><ul><ul><li>Information has a meaning e.g 18 th January 1981 </li></ul></ul>
  17. 17. Revision of CDP <ul><li>The Data Processing Cycle </li></ul><ul><ul><li>Data Collection and Preparation </li></ul></ul><ul><ul><li>Data Input </li></ul></ul><ul><ul><li>Data Processing </li></ul></ul><ul><ul><li>Data Output </li></ul></ul><ul><li>Different Methods of Data Collection </li></ul><ul><ul><li>Barcodes </li></ul></ul><ul><ul><li>Magnetic Stripe cards </li></ul></ul><ul><ul><li>Smart cards </li></ul></ul><ul><ul><li>Mark sense cards </li></ul></ul><ul><ul><li>Magnetic Ink Character Recognition </li></ul></ul>
  18. 18. Making Sure Data is Correct <ul><li>Verification </li></ul><ul><ul><li>Checking that the data has been entered correctly </li></ul></ul><ul><ul><li>Entering the same data twice is a way of verifying data </li></ul></ul><ul><li>Validation (Remember input validation) </li></ul><ul><ul><li>Checking that the data is sensible and accurate </li></ul></ul><ul><ul><li>Is 31/14/2007 valid??? </li></ul></ul><ul><ul><li>Check Digits </li></ul></ul><ul><ul><ul><li>Adding an extra digit at the end of a number to make sure it has been entered correctly </li></ul></ul></ul><ul><ul><li>Range checks </li></ul></ul><ul><ul><ul><li>Checking the age is within a certain range </li></ul></ul></ul>
  19. 19. Keywords in CDP <ul><li>Interactive processing </li></ul><ul><ul><li>When data is processed as it is entered for example in a Travel Agent </li></ul></ul><ul><li>Multi-user Database </li></ul><ul><ul><li>A database that can be accessed by many different users at the same time </li></ul></ul><ul><li>Mainframe </li></ul><ul><ul><li>A large powerful computer system that can process a large amount of data very quickly </li></ul></ul><ul><li>Terminal </li></ul><ul><ul><li>A keyboard and screen connected to the mainframe. There may be hundreds of terminals connected to the mainframe (Visual Display Unit) </li></ul></ul>
  20. 20. Job Types <ul><li>Open up Powerpoint and complete a slideshow on the following job types. </li></ul><ul><li>Programmer </li></ul><ul><li>System Analyst </li></ul><ul><li>Network Manager </li></ul><ul><li>Computer Engineer </li></ul>
  21. 21. What we have covered so far! <ul><li>What is CDP? </li></ul><ul><li>Hardware Required </li></ul><ul><ul><li>Mainframe/Terminals </li></ul></ul><ul><li>Advantages of using computers </li></ul><ul><li>Data V Information </li></ul><ul><li>The Data Processing Cycle </li></ul><ul><li>Data Input Method </li></ul><ul><ul><li>Bar Code </li></ul></ul><ul><ul><li>Smart card </li></ul></ul><ul><ul><li>Magnetic Stripe Card </li></ul></ul><ul><ul><li>MICR </li></ul></ul><ul><ul><li>Mark Sense Card </li></ul></ul><ul><li>Checking Data is entered correctly </li></ul><ul><ul><li>Validation </li></ul></ul><ul><ul><ul><li>Range Check </li></ul></ul></ul><ul><ul><ul><li>Check Digit </li></ul></ul></ul><ul><ul><li>Verification </li></ul></ul><ul><li>CDP Keywords </li></ul><ul><ul><li>Interactive Processing </li></ul></ul><ul><ul><li>Multi-user databases </li></ul></ul>
  22. 22. What we have still to cover <ul><li>Job Types </li></ul><ul><ul><li>Systems Analyst </li></ul></ul><ul><ul><li>Programmer </li></ul></ul><ul><ul><li>Network Manager </li></ul></ul><ul><ul><li>Computer Engineer </li></ul></ul><ul><li>E-Commerce </li></ul><ul><ul><li>Online shopping </li></ul></ul><ul><ul><li>Online Banking </li></ul></ul><ul><li>Paying for Goods in CDP </li></ul><ul><ul><li>Electronic Funds Transfer </li></ul></ul><ul><ul><li>Electronic Point of Sale </li></ul></ul><ul><li>Economic implications of CDP </li></ul>
  23. 23. Job Types <ul><li>Systems Analyst </li></ul><ul><ul><li>Looks at the current manual system </li></ul></ul><ul><ul><li>Plan how computer systems can be used to help the company </li></ul></ul><ul><ul><li>Write a reports outlining the benefit of computer based system </li></ul></ul><ul><li>Network Manager </li></ul><ul><ul><li>Person in charge of the network </li></ul></ul><ul><ul><li>Concerned with day-to-day running of network </li></ul></ul><ul><ul><li>Issuing passwords </li></ul></ul><ul><ul><li>Giving people different levels of access </li></ul></ul><ul><ul><li>Disciplining network misuse </li></ul></ul>
  24. 24. Job Types <ul><li>Programmer </li></ul><ul><ul><li>The programmer writes programs for the company </li></ul></ul><ul><ul><li>Possibly checks if commercial software is available to buy </li></ul></ul><ul><ul><li>Finds “bugs” or errors in the program </li></ul></ul><ul><ul><li>Makes changes to current software </li></ul></ul><ul><li>Computer Engineer </li></ul><ul><ul><li>Installs new computer systems </li></ul></ul><ul><ul><li>Inspects and repairs current computer systems </li></ul></ul><ul><ul><li>Gives timescales on fixing problems </li></ul></ul>
  25. 25. What you need to know!! <ul><li>E-commerce </li></ul><ul><ul><li>On-line shopping </li></ul></ul><ul><ul><li>On-line banking </li></ul></ul><ul><ul><li>Advantages for Companies </li></ul></ul><ul><ul><li>Advantages for Customers </li></ul></ul><ul><li>EFT </li></ul><ul><li>EFTPOS </li></ul><ul><ul><li>Advantages/Disadvantages </li></ul></ul>
  26. 26. E-Commerce/Online Shopping <ul><li>E-Commerce = buying and selling goods on the internet and transferring the money within online banks </li></ul><ul><li>Examples: </li></ul><ul><ul><li>EBAY </li></ul></ul><ul><ul><li>Amazon </li></ul></ul><ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul>
  27. 27. Advantages for Companies <ul><li>Open for business 24 hours a day </li></ul><ul><li>Can lower the costs of products </li></ul><ul><ul><li>cost of 1 online shop V 25 high street outlets </li></ul></ul><ul><li>Impulse purchases = customers may be tempted to buy more </li></ul>
  28. 28. Advantages for Customers <ul><li>Can shop from the comfort of your home </li></ul><ul><li>You can easily compare prices from sellers </li></ul><ul><li>Possibly cheaper </li></ul><ul><li>Shop 24/7 </li></ul><ul><li>Customers can track orders </li></ul><ul><li>Change product specifications and see price changes </li></ul>
  29. 29. What we have covered so far! <ul><li>What is CDP? </li></ul><ul><li>Hardware Required </li></ul><ul><ul><li>Mainframe/Terminals </li></ul></ul><ul><li>Advantages of using computers </li></ul><ul><li>Data V Information </li></ul><ul><li>The Data Processing Cycle </li></ul><ul><li>Data Input Method </li></ul><ul><ul><li>Bar Code </li></ul></ul><ul><ul><li>Smart card </li></ul></ul><ul><ul><li>Magnetic Stripe Card </li></ul></ul><ul><ul><li>MICR </li></ul></ul><ul><ul><li>Mark Sense Card </li></ul></ul><ul><li>Checking Data is entered correctly </li></ul><ul><ul><li>Validation </li></ul></ul><ul><ul><ul><li>Range Check </li></ul></ul></ul><ul><ul><ul><li>Check Digit </li></ul></ul></ul><ul><ul><li>Verification </li></ul></ul><ul><li>CDP Keywords </li></ul><ul><ul><li>Interactive Processing </li></ul></ul><ul><ul><li>Multi-user databases </li></ul></ul><ul><li>Job Types </li></ul><ul><ul><li>Programmer </li></ul></ul><ul><ul><li>Systems Analyst </li></ul></ul><ul><ul><li>Network Manager </li></ul></ul><ul><ul><li>Computer Engineer </li></ul></ul><ul><li>E-Commerce </li></ul><ul><ul><li>Online Shopping </li></ul></ul><ul><ul><ul><li>Adv for Company/Customer </li></ul></ul></ul><ul><ul><ul><li>Disadvantages </li></ul></ul></ul>
  30. 30. Disadvantages of Online Shopping <ul><li>Fraud = people kidding on they are you! </li></ul><ul><li>Less social = you don’t speak to anyone! </li></ul><ul><li>Only accessible to those with computers </li></ul><ul><li>Could lead to fewer shops </li></ul><ul><li>Don’t see the product before you buy it! </li></ul>
  31. 31. Final CDP Lesson <ul><li>Online banking </li></ul><ul><ul><li>Advantages for Banks </li></ul></ul><ul><ul><li>Advantages for Customers </li></ul></ul><ul><li>Paying for Goods in CDP </li></ul><ul><ul><li>POS </li></ul></ul><ul><ul><li>EPOS </li></ul></ul><ul><ul><li>EFT </li></ul></ul><ul><ul><li>EFTPOS </li></ul></ul>
  32. 32. Online Banking <ul><li>Transferring money, setting up standing order and direct debits on the internet </li></ul><ul><li>Advantages for Banks </li></ul><ul><ul><li>Lower staff and building costs </li></ul></ul><ul><ul><li>Less cash handling </li></ul></ul><ul><li>Advantages for customers </li></ul><ul><ul><li>Customer does not need to leave the house and can bank 24/7 </li></ul></ul><ul><ul><li>Possibly better interest rates </li></ul></ul>
  33. 33. POS/EPOS <ul><li>Point of Sale (EPOS?) </li></ul><ul><ul><li>This is where the customer pays for the goods, for example, the checkout </li></ul></ul><ul><li>Advantages of EPOS </li></ul><ul><ul><li>Faster to process customers at checkout </li></ul></ul><ul><ul><li>Customer gets itemised receipt </li></ul></ul><ul><ul><li>Manager of store can keep a record of what items are sold </li></ul></ul><ul><ul><li>Easy to reduce price of items </li></ul></ul>
  34. 34. EFTPOS <ul><li>Electronic Funds Transfer </li></ul><ul><ul><li>Is a way you can pay for goods without using cash. </li></ul></ul><ul><ul><li>The money is transferred straight from you bank account to company’s bank account </li></ul></ul><ul><li>EFTPOS </li></ul><ul><ul><li>This is when money is authorised to be debited from a customer’s bank account at the checkout terminal using a smart card </li></ul></ul>
  35. 35. Other Implications <ul><li>Initial Costs = the money to set up the system </li></ul><ul><li>Management Information = the info the manager gets from the system that he uses to analyse sales figures and plan promotions </li></ul>
  36. 36. What we have covered so far! <ul><li>What is CDP? </li></ul><ul><li>Hardware Required </li></ul><ul><ul><li>Mainframe/Terminals </li></ul></ul><ul><li>Advantages of using computers </li></ul><ul><li>Data V Information </li></ul><ul><li>The Data Processing Cycle </li></ul><ul><li>Data Input Method </li></ul><ul><ul><li>Bar Code </li></ul></ul><ul><ul><li>Smart card </li></ul></ul><ul><ul><li>Magnetic Stripe Card </li></ul></ul><ul><ul><li>MICR </li></ul></ul><ul><ul><li>Mark Sense Card </li></ul></ul><ul><li>Checking Data is entered correctly </li></ul><ul><ul><li>Validation </li></ul></ul><ul><ul><ul><li>Range Check </li></ul></ul></ul><ul><ul><ul><li>Check Digit </li></ul></ul></ul><ul><ul><li>Verification </li></ul></ul><ul><li>CDP Keywords </li></ul><ul><ul><li>Interactive Processing </li></ul></ul><ul><ul><li>Multi-user databases </li></ul></ul><ul><ul><li>Management Information </li></ul></ul><ul><li>Job Types </li></ul><ul><ul><li>Programmer </li></ul></ul><ul><ul><li>Systems Analyst </li></ul></ul><ul><ul><li>Network Manager </li></ul></ul><ul><ul><li>Computer Engineer </li></ul></ul><ul><li>E-Commerce </li></ul><ul><ul><li>Online Shopping </li></ul></ul><ul><ul><ul><li>Adv for Company/Customer </li></ul></ul></ul><ul><ul><ul><li>Disadvantages </li></ul></ul></ul><ul><ul><li>Online banking </li></ul></ul><ul><li>Paying for Goods </li></ul><ul><ul><li>Point of Sale </li></ul></ul><ul><ul><li>Electronic Point of Sale </li></ul></ul><ul><ul><li>Electronic Funds Transfer </li></ul></ul><ul><ul><li>EFTPOS </li></ul></ul>