My Presentation
Upcoming SlideShare
Loading in...5
×
 

My Presentation

on

  • 991 views

My section of the COMP1900 Keynote presentation.

My section of the COMP1900 Keynote presentation.

Statistics

Views

Total Views
991
Views on SlideShare
976
Embed Views
15

Actions

Likes
2
Downloads
27
Comments
0

2 Embeds 15

http://comp1900-2008-anthony.blogspot.com 13
http://www.slideshare.net 2

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

My Presentation My Presentation Presentation Transcript

  • Management of Data in Spreadsheets & Databases
  • SPREADSHEETS? •A grid that organises data into cells •Allows us to record, compare and display data efficiently and easily •Can be thought of as a large calculator •Capable of simple and complex mathematical calculations •Commonly used in budgets, financial analysis, and sales forecasting
  • OUR SPREADSHEET •Created in Google Docs •Two week record of each student’s activities rounded to the nearest half-hour block of time •Consists of six categories: student, category, activity, day, time & duration in hours
  • RELATIONAL DATABASES •A collection of data •Structured •Displayed in rows and columns, and linked to other tables •Minimises duplication of data •Commonly used for school/university student records, business partnership or product records, etc.
  • EXAMPLE? •School’s student records in a particular class •Same teacher, same home room, same class name •This data would be duplicated in a spreadsheet •This data would be entered ONCE in a relational database •It would then be linked, or “related” to each student
  • SPREADSHEETS Advantages Disadvantages Simple to use Repeated data Easy data duplication Data entry errors Cell formulas & calculations Formula errors
  • RELATIONAL DATABASES Advantages Disadvantages Elimination of repeated data Difficult to set up Search, retrieval and subsets Calculations are not cell-based Tabular or other display formats Cross-platform support difficult
  • CONTRAST Spreadsheets Relational Databases Repeated data Elimination of repeated data Simple to use Difficult to set up Cell formulas & calculations Calculations are not cell-based Data entry errors Search & retrieval of data Cell format view Many display formats Graphics are easy to insert Graphics are harder to set up