Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons
Define the term- Actors and Data Stores Actors: An actor is the active object which drives data flow graph by producing or consuming values. Actors are attached to inputs a
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
Describe the difference between a one-to-many and a many-to-many relationship. Which logical data structures comprise one-to-many and which comprise many-to-many relationship?
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
Explain three main attributes of data.
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd