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What is Data

admin 06:32:pm Jan 29 2017

Data is information in raw or unorganized form (such as alphabets, numbers, or symbols). It refers to, or represents, conditions, ideas, or objects. Data is limitless and present everywhere in the universe

An Example:

In the office we took a pizza lovers survey.
We learned that ten people liked pepperoni pizza best.
Nine liked sausage pizza best.
Seven liked cheese pizza best.
This information is called DATA
If you plan to give a pizza party for your team in the office then you would need the pizza lover's survey data.

We need data analyze any request


Data is Everywhere

Some examples are

Sources of data around us

There can be numerous other sources of data like

  1. Buildings
  2. Medical researches
  3. Human Mind
  4. Geological Data
  5. Astronomical Data
  6. Business transactions
  7. Sensors
  8. Social media sites
  9. Digital photos

The list is endless and open ended

Lots of Data

  1. 2.5 quintillion bytes of data are generated every day! -A quintillion is 1018
  2. Google processes 20 PB a day (2008)
  3. Wayback Machine has 3 PB + 100 TB/month (3/2009)
  4. Facebook has 2.5 PB of user data + 15 TB/day (4/2009)
  5. eBay has 6.5 PB of user data + 50 TB/day (5/2009)
  6. CERN's Large Hydron Collider (LHC) generates 15 PB a year

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