The file based system in dbms, Database Management System

The File Based System

File based systems are an early attempt to computerise the manual filing system. For example, a manual file can be set up to hold all the correspondence relating to an exacting matter as a project, product, task, employee or client. In an organisation there could be a lot of such files which may be stored and labelled. The same could be done at homes where file relating to tax payments, bank statements, receipts, etc., could be maintained.

What do we do to search information from these files? For finding of information, the entries could be searched in sequence. Alternatively, an indexing system could be used to situate the information.

The manual filing system works well when the amount of items to be stored is small. It even works fairly well when the number of items stored is fairly large and they are only needed to be retrieved and stored. Though, a manual file system crashes when processing of information and cross-referencing in the files is carried out. For instance, in a university a number of students are enrolled who have the options of doing many courses. The university may have divide files for the personal details of students, fees paid by students, the number and details of the courses taught, the number and details of each faculty member in many departments. Consider the effort to answer the following queries.

  • Annual fees given by the students of Computer science department.
  • Number of students requiring transport facility from a specific area.
  • This year's turnover of students as compared to last year.
  • Number of students opting for dissimilar courses from dissimilar departments.

The solutions to all the questions above would be time consuming in the file based system and cumbersome.

 

Posted Date: 3/5/2013 4:27:49 AM | Location : United States







Related Discussions:- The file based system in dbms, Assignment Help, Ask Question on The file based system in dbms, Get Answer, Expert's Help, The file based system in dbms Discussions

Write discussion on The file based system in dbms
Your posts are moderated
Related Questions
Question : (a) Explain with the help of appropriate examples the difference between ‘Data' and ‘Information'. (b) A digital image is an array of pixels, where each pixel h

External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d


What are advantages of object models? Object models are efficient for communicating with the application experts and reaching a consensus about the significant aspects of the p

What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.


An important first step to the statistical analysis of data is to "get to know your data".  The following tasks should contribute to this. (a)   To the right of the dataset cons

Deadlock Prevention One of the easiest approaches for avoiding a deadlock would be to obtain all the locks at the begin of the transaction. Though, this approach restricts conc


What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one