Page 239 - IT 402 v2.0 class 10
P. 239

nit-2
                                                         nit-2
                                                        Unit-2 Electronic Spreadsheet (Advanced)dvanced)
                                                        U U U U nit-2  E lectronic Spreadsheet (     A
                                                           Unit-3 Database Management System
                                                                   lectronic Spreadsheet (

                                 DATABASE MANAGEMENT                                                       4










            It is often said, "Information is Power". The database concept has evolved since the 1960s to
            ease various issues   in designing, building, and  maintaining  complex information  systems
            manually Earlier all bits of information like employee details stock details or payment details were
            maintained in files Now  the computerised systems use database programs such as Microsoft
             ccess  OpenO ce  ase and MyS   to organise the data as per o cial needs.

               DATABASE

            A database is defined as an organised collection of data that can be visualised as a container
            of information. The data is processed and interpreted according to its real aspects to support
            processes that re uire this information.  ith the help of database  data can be stored  modified
            and retrieved.


                                ccording  to  the   merican  National  Standards  Institute    NSI    data  means  the
                      Data     representation  of facts,  concepts or  instructions in a formalised manner  which  is
                               suitable for interpretation or processing by human or by automatic means.



                               It is a meaningful and useful form obtained after processing the data. Hence, it can
                   Information
                               be defined as a set of organised data.




                               It is the act of understanding the context in which the data has been produced or the
                   Knowledge
                               information has been used. It can be based on learning through information.


            In the beginning, a lot of problems occurred in gathering, organising, retrieving, storing, and
            securing the data. Hence, there was a need for proper storage of data and to handle and manage
            the data in an e cient manner.  his led to the maintenance and collection of related and ordered
            data in such a way that the information gathered from it could be accessed quickly and easily.
            Such assembled data resulted into organised  database .     atabase  is a collection of logically
            related data that allows easy and e cient storage  retrieval and manipulation of data.

             he main difference between modern databases and the conventional method of storing the data
             i.e.  old paper based data  lies in the ability to retrieve and manipulate data.  atabase constitutes
            the most important component of information system. Data is the basic source of an information.
            Owing to the rapid growth of I.T. in the last few decades, organisations and institutions have
            realised the value of database, as a resource and the importance with which this resource can be
            managed and manipulated.


                                                                                  Database Management          237
   234   235   236   237   238   239   240   241   242   243   244