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Showing posts from September, 2023

Disadvantage of File processing system.

  DISADVANTAGE OF FILE PROCESSING SYSTEM        Data  redundancy and inconsistery. difficulty in accessing data. Data isolation. Integrity problem. Atomicity problem  Concurrent access anomalies  Security problem 

INTRODUCTION OF DBMS

                                       DATA BASE MANAGEMENT SYSTEM DATA :  Data is the collection of raw, unorganized facts and detail like text, observation, figures, symbols and description of things. * In other words data does not carry any specific purpose and has no significance b itself. * Moreover data is measured in terms of all bits and bytes -which are basic unit of information in the context of computer storage and processing. * Data can be recorded and does not have any meaning unless processed TYPE OF DATA Quantitative :  N umerical form                                       weight, volume, cost of an item.       2.  Qualitative  :  Descriptive, but not numeric ,Name, gender, hair color of a person