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 is a transaction ? The Transaction is a unit of data processing. For instance, many of the transactions at a bank may be withdrawal or deposit of money; transfer of money f

Dirty Reads: T10 reads a value which is updated by T9. This update has not been committed and T9 aborts. T9 T10 Value of x old value = 200

Question: (a) With the help of a diagram, explain the TOGAF framework for enterprise architectures. (b) Where would you position enterprise architectures in an enterpri


Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i) CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dep

What is Explicit update In explicit update, each derived attribute is defined with respect to one, or more fundamental base object(s). The object designer determines that de

What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys

Discuss The difference between drop table R and delete from R.  DROP TABLE command deletes all the records with the table definition. This command will automatically committed

Why containment is important in oosystems? Containment is an significant concept in oosystems because it allows dissimilar users to view data at different granularities.

Differentiate between Procedural and non procedural languages ? Procedural and non procedural languages - A procedural language specifies the operations to be performed on th