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Introduction to databases

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An introduction to databases: definition, examples, and structure

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Introduction to databases

  1. 1. Databases Just what are they, and why should I care?
  2. 2. What do these things have in common? <ul><li>IMDb </li></ul><ul><li>iTunes </li></ul><ul><li>Your comments </li></ul><ul><li>A recipe box </li></ul><ul><li>InfoCentre Patron’s catalog </li></ul><ul><li>Phone book </li></ul><ul><li>Our survey </li></ul>
  3. 3. They are all: <ul><li>Collections of information or data </li></ul><ul><li>with a set form or structure </li></ul><ul><li>organized in some way, and </li></ul><ul><li>Able to be re-organized instantly (this is called indexing or sorting ) </li></ul>
  4. 4. What are they made of? <ul><li>Fields = “fill-in the blanks” </li></ul><ul><li>Many fields make up a record - like one blank form, recipe card, IMDb description </li></ul><ul><li>Many records make up a database </li></ul>
  5. 5. Fields <ul><li>Fields = “fill-in the blanks” </li></ul>last name movie director favorite food ingredient cell number genre author
  6. 6. Fields <ul><li>Fields = “fill-in the blanks” </li></ul>Remember our survey ?
  7. 7. Records <ul><li>Many fields = one record </li></ul>one survey form one recipe card a rolodex card all the info for &quot;Pirates...&quot;
  8. 8. Databases <ul><li>Many records = one database </li></ul>
  9. 9. Ready for your quiz?
  10. 10. So, is this a database? Why or why not?
  11. 11. How about this? Why or why not?
  12. 12. Wow, she’s good!
  13. 13. What’s for dinner?
  14. 14. Sorry, wrong number!

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