Determine the Disadvantages of file based systems, Database Management System

Assignment Help:

Determine the Disadvantages of file based systems

Some of the disadvantages of file based systems are like this:

  • Data redundancy and inconsistency: the dissimilar application programs may require similar data but may store it in separate files to be employed by them only. For instance, in a college environment, the address, contact no. etc., may be kept both by the office staff and the library staff to sent suitable reminders to the fee defaulters or to the students who have not returned the books on due dates, correspondingly. If a student alters the residence and that is reflected in only one of the system after that it leads to inconsistency.
  • Difficulty in accessing data: Although if the data is there in the file but if a new type of details is needed from the data, they cannot be retrieved if not and until a new application is written for it.
  • Data isolation: as data are scattered in several files, and files may be in different formats, writing new application programs to retrieve the suitable data is difficult.
  • Integrity problems: The integrity constraint can be applied by the application program, but not directly to the data file. For instance, there is a constraint to make sure that the balance of an account must not be below Rs. 1000, after that through application program this can be completed but someone may directly make the changes to the data file and violate this constraint.

Related Discussions:- Determine the Disadvantages of file based systems

Scope of traffic data management, A TDMS project plan is not a typical Info...

A TDMS project plan is not a typical Information Technology project plan; therefore, a traffic data project has several unique characteristics: Traffic data management system

Explain about database system structure, Explain about database system stru...

Explain about database system structure? Storage manager Authorization and integrity manager Transaction manager File manager Buffer manager Storage manager

Exclusive lock, Exclusive lock It is asked for by a transaction on...

Exclusive lock It is asked for by a transaction on a data item that it wants to update. No other transaction can put either a shared lock or an exclusive lock on a dat

Differentiate between strict and rigorous two phase locking, Differentiate ...

Differentiate between strict two-phase and rigorous two-phase with conversion protocol Ans:  Strict two-phase locking holds all its exclusive that is write locks until commit t

What is candidate key, What is candidate key? Candidate Key - A candi...

What is candidate key? Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.

What was the method in which records are physically stored, What was the me...

What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within

What is oracle databse structure, What is Oracle databse structure? Or...

What is Oracle databse structure? Oracle database structure: The relational model has three main aspects: Structures: Structures are well-defined objects which store th

What is a block and a block number, What is a block and a block number? ...

What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere

Enterprise applications integration, The figure below depicts the conceptu...

The figure below depicts the conceptual diagram of a banking system. (a) Describe one example relevant to the system in figure, for each of the 4 types of enterprise appl

Define average seek time, Define average seek time. The average seek ti...

Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd