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!
Explain the shadow paging recovery technique.
Ans: Shadow paging is a method used to acquire atomic and durable transactions, and provides the capability to manipulate pages in a database. Throughout a transaction, the pages influenced by the transaction are copied from the database file into a workspace, like volatile memory, and modified in that workspace. While a transaction is committed, all of the pages that were altered by the transaction are written from the workspace to not used pages in the database file.
Throughout execution of the transaction, the state of the database exposed to the user is that where the database existed prior to the transaction, as the database file still consist of the original versions of the modified pages, like they existed before being copied into the workspace. If a user accesses the database previous to the transaction is complete, or on the recovery of a failure, it will come out as though the transaction has not occurred.
Which file organization provides very fast access to any arbitrary record of a file? Hashed file organization provides very fast access to any arbitrary record of a file.
Demonstrate the Design of associations During object design phase we must design a strategy to implement associations. Association may be unidirectional or bi-directional. Wha
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
Describe Specialsation and generalization? Specialisation /generalization: This is a top down and bottom up approach to the design of database. It displays the IS_A relation
In this programming assignment, you will develop a simple database of student records. Here are the requirements: 1) A student record contains a name and a number. We assume tha
Support by Adding Indexes Multiple indexes can be used to access a data file by multiple access paths. In such a scheme only single copy of the data is consider, only the numbe
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
Explain entity integrity and referential integrity rules within relational model. Show how these are realized in SQL? Entity Integrity Rule - No primary key value could be nu
Problem: ‘Users and Information system specialists need to spend inordinate amounts of time locating and gathering data' (Watson and Hal, 1998) Recent developments in the ar
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
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