What is Data?
Data is a sequence of bits with a value of one or zero. The singular of data is datum which represents a symbol. It's the building blocks of knowledge, waiting to be organized and interpreted. It is raw information, like facts, numbers, or symbols!
Why is Data important?
The world we are living in is rich with data. Any platform
that has an online appearance and that accepts posting, logging, commenting, or
electronic payments is gathering data. All that data is filled with potential
if you can learn how to find it.
Data has a big value and is important for business. It is
one of the most valuable assets that an organization has. The number of data
insights is growing. It helps companies to grow.
Governments, nonprofit organizations, and academic
facilities also strive to find insights in data that can help solve challenges,
like poverty, climate change, disease, inequality, and terrorism.
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Problem Solver
Data is a problem solver. Analysts extract valuable insights
for companies by processing the data. They follow a process to gather, clean,
and transform data to answer the question, what is the data talking about in a
business? The goal of this process is to use the insights to help make better
and more informed decisions and solve problems.
Data till Date
From traffic patterns and music downloads to web histories
and medical records, data is stored, recorded, and analyzed to enable
technology and services that the world needs daily.
According to the Earthweb, by Jason Wise, the world
generates 2.5 quintillion bytes of data every day. There are billion billions
or millions of trillions in one quintillion.
By 2025, global data creation is projected to grow to more
than 180 zettabytes. Zettabytes is a number 1 followed by 21 zeroes!
Types of Data
Data might be facts, statistics, opinions, or any kind of
content that is recorded in some format. When data analysts organize data, they
divide it into two forms:
Structured Data
Structured data can be organized in rows and columns. If you
can organize information within data into groups, based on specific
characteristics, then those groups or structured data. Examples include names,
dates, addresses, stock information, card numbers, and geolocation.
Unstructured Data
Unstructured data is
everything other than structured data. They have no predefined format. Examples
of unstructured data include images, texts, tweets, comments, medical records,
and even song lyrics.
What is a Database?
A database is a collection of
structured data in a computer system. It is highly organized so that the data
is accessible by queries and computation software.
Most databases are organized
as relational databases. It is a collection of multiple data sets or tables
that link together. For example, one table might show names and addresses,
while the other might show properties.
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