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advantages of database :
* data independence ( data and the program are independent , for example if the format of the data has been changed need not to change the file structure WHAT the data is re queried is enough no need to worry about HOW to retrieve the data).
* data redundancy can be avoided ( in file for example take two file one is saving file and another is transaction file in both the customer address will be in both file it lead to replication of data his can be avoided in database using normalization (norm 1)
* data security (database provide security for accessing of all data)
* data integrity (data will be accessed my all user its centralized so accuracy(integrity) will be maintained..
disadvantage;
vice versa
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