Introduction to Information Technology (IT)
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Introduction to Information Technology (IT)

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Introduction to Information Technology (IT) Introduction to Information Technology (IT) Presentation Transcript

  • DATA:DATA ARE SET OF IOSOLATED,UNRELATE,UNINTERPRATED RAW FACTS. INFORMATION:INFORMATION REFERS TO MEANINGFULL DATA.IT IS A SET OF ORGANISED,VALIDATED,CORRECTED AND COLLECTED DATA.
  • →ADDITION OF KNOWLEGDE →DECISION MAKING AIDS →INCREASE IN PRODUCTIVITY
  • 1.VALIDITY:-The information should have minimized uncertainities to be treated as a valid information. 2.MEANINGFULNESS:-It should be meaningful in given context and for the person concerned. 3.PRECISON:-It should be concise having summarised relevant data. 4.ACCURACY:-it should try to reach maximum possible accuracy
  • 1.FORM UTILITIES:-As the form of information more closely matches the requirements of decision maker , its value increases. 2.TIME UTILITY:-Information has greater value to the decision maker if it is available when needed. 3.ACCESSIBILITY:-Information has greater value if it can be accessed or delivered easily 4.DECISION MAKING POTENTIAL:-If it provides help to make an effective decision with minimum cost , time and effort ,such information ha more value.
  • 1.Physical data concept:-It refers to the manner in which data is recorded physically on hardware. 2.Logical data concept:-It is the manner in which data are presented to the application programmer.
  • BYTE:-A byte is a group of eight bits and is used to store a character. DATA ITEM:-A data item is a smallest unit of named data. DATA AGGREGATES:-It is a named collection of data items within a record and refers to a whole. RECORD:-A record is a named collection of data items which represents a complete unit of information. FILE:-A file is a named collection of all occurence of a given type of logical record.
  • Factor affecting the way of data are stored:1.Space saving 2.Minimization of Redundancy 3.Throughput 4.Data volatility 5.File active ratio
  • DEFINITION:-The techniques used to represent and store the records on a file is referred to as file organization. Three fundamental organization techniques are:1.Sequential File organization 2.Direct access file organization. 3.Index file organization.
  • Definition:-It is defined technically as a set of interrelated components that collect ,process, store , and distribute data and information and provide a feedback mechanism to meet an objective
  • Definition:-It is an organizational information system that rely on computer technology to collect, process, store, and disseminate information. It is composed of hardware ,software, data base, telecommunication ,people ,and methods.
  • BUSINESS ORGANIZATION AND INFORMATION SYSTEM