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* Traditional File System :

The information system can be either a conventional file processing or a database system. file is a collection of related information with name assigned to it. File processing is the first attempt to computerize the manual system. file can be organized using folders. File system considered as a very primitive kind of database management system as it allows us to store the data. Data in most organization is stored in the form of files and folders. For example list of student can be stored in a text file or in a spreadsheet.

In convention file processing system, each and very subsystem of the information system will have its own set of files. As a result, there will be duplication of data between various subsystem of the information system. For example , a file folder in office of school clert might contain student data organized as one file folder for each standard , which is turn will have folder student detail of each student . result details of student are organized in a separate file. Ideally the contents of each folder were logically related.

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Download PHP Full Source Code Free Template. How to Download Free Responsive Website Templates

* Important Note To Download Templates * 1. Conceptual Simplicity : As the information is represented in form of tree structure, it is easy to view, understand, and retrieve the data. This helps the database designer to obtain conceptual clarity of relationship. 2.. Database security : Security is provided by DBMS. Thus Programming effort is decreased as compared to file system in which programmer has to write the programs for implementing security. 3. Data independence : If changes are made in design of database, DBMS takes care of cascading it throughout the system. There is no need to make change in system. * Limitation of Download Templates * 1. Complexity : To implement the database using hierarchical model. programmer needs to have detailed knowledge of how the data is’ stored has to traverse entire tree for the same. 2. Data Redundancy : To implement many to many ‘relationships amongst data repeatition of data is required. T...

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* ADVANTAGE OF PHP HIERARCHICAL DATATABLE MODELS * 1. Conceptual Simplicity : As the information is represented in form of tree structure, it is easy to view, understand, and retrieve the data. This helps the database designer to obtain conceptual clarity of relationship. 2.. Database security : Security is provided by DBMS. Thus Programming effort is decreased compared to file system in which programmer has to write the programs for implementing security. 3. Data independence : If changes are made in design of database, DBMS takes care of cascading it throughout the system. There is no need to make change in system. * DISADVANTAGE OF PHP HIERARCHICAL DATABASE MODELS * 1. Complexity : To implement the database using hierarchical model. programmer needs to have detailed knowledge of how the data is’ stored has to traverse entire tree for the same. 2. Data Redundan...

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