Distributed control and data sharing , Database Management System

Distributed Control and Data sharing:The geographical distribution of an organization can be showed in the distribution of the data; if a number of different sites are linked to each other, then a user at single site may be able to access data that is available at another site. The main benefit here is that the user does not want the site from which data is being accessed. Data can be placed at the site near to the users who normally use that data. The local control of data permits establishing and enforcement of local policies regarding use of local data. A global database administrator (DBA) is responsible for the whole system. Usually, part of this responsibility is given to the local administrator, so that the local DBA can manage the local DBMS. Therefore in the distributed banking system, it is feasible for a user to get his/her information from any branch office. This external mechanism would, in effect to a user, look to be a one centralised database.

The primary benefit of accomplishing data sharing by means of data distribution is that every site is able to retain a degree of control over data stored locally. Depending upon the design of the distributed database system, every local administrator may have a dissimilar degree of autonomy. This is often a major benefit of distributed databases. In a centralised system, the database administrator of the central site manages the database and, therefore, no local control is possible.

 

Posted Date: 3/12/2013 5:52:41 AM | Location : United States







Related Discussions:- Distributed control and data sharing , Assignment Help, Ask Question on Distributed control and data sharing , Get Answer, Expert's Help, Distributed control and data sharing Discussions

Write discussion on Distributed control and data sharing
Your posts are moderated
Related Questions
What are the two distinct aspects to the implementation of associations? i) It is required to define data declarations which will enable details of actual links to be stored. I

Project Description: Looking to prepare automated trading engine for alternate cyprto currencies starting with Cryptsy, finally integrating into other exchanges. Need to work wi

Failure Controlling Methods: Failures can be handled using different recovery methods that are talk about later in the unit. But the first question is doing we really require recov

A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super

Task Partitioning, Sequencing and Project Planning The tasks required for the service might be broadly partitioned into: 0.      Set up database tables and account file

Explain the function of input controls. Identify four types of input control and explain the function of each. Provide an example of a data integrity error that could occur i

What are the drawbacks of shadow-paging technique? The drawbacks of shadow paging is:- a) Commit Overhead b) Data fragmentation c)  Garbage collection

Candidate Key:  In a relation R, a candidate key for R is a subset of the set of attributes of R, which have the differnt two properties: (1)        Uniqueness:                N

Create student database and retrieve course name taught by king? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (secti

Differentiate between the object oriented decomposition and the structured decomposition? Process-oriented (structural) decomposition divides a complex process, function or tas