IT training institutes in Chennai (1)

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IT training institutes in Chennai
HB Education and Consulting Services Private
Limited
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IT Training institutes in Chennai strive to teach
basic to advance concepts on how to collect and
use data for the growth of the organization. Here
are some facts on Data. Defining data and
information Data is defined as a set if
unrelated, isolated, uninterrupted raw fact.
While, information refers to meaningful data. It
is a set of organized, corrected, validated and
collected data. Information is required for
knowledge addition, supporting decision making
and enhancing productivity. The information
should be free from uncertainties and has to be
treated as valid.
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Information should be meaningful in terms of
context and for persons concerned. It should be
precise and be concise with relevant data. It
should also try to reach the maximum possible
accuracy. The information matches the
requirements of the decision maker, thereby
increasing the value of the information. It is
time bound and has to be available one a timely
basis.
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Information should be accessible and delivered
easily. It should be an effective tool for
decision making with minimum cost, effort and
time. Only such information is valuable. What is
dataconcept? It is the information concepts at
the time we talked about. There are two types of
dataconcepts physical dataconcept referring to
the manner the data is recorded physically and
logical data concept, a manner in which the data
is presented to the application programmer.
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How is a file component divided? There are
different types of components of a file.

• Byte a group of eight bits
• Data item It is the smallest unit of named data
• Data aggregates It is a collection of data items
  in a record and can be treated as whole
• Record It is a collection of data items
• File It is a collection of all occurrence of
  logical record.

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What is data storage? It is the data stored for
future retrieval. Factors affecting data storage
are

• Storage space
• Throughput
• Data Volatility
• Minimization of redundancy
• File active ratio

What is file organization? It is the technique
used to represent and store records on a file. It
can be divided into

• Sequential File organization
• Direct access file organization
• Index file organization

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HB Education and Consulting Services Private
Limited CONTACT US M 91-96771 67119
T 91-44-4211 5338 E education_at_hbservice
s.in Visit us http//www.hbservices.in