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!
What is system log? What are the entries?
Ans: The system log that is generally written on stable storage contains the redundant data required to recover from volatile storage failures and as well from errors discovered by the transaction or the database system. System log is as well known as log and has sometimes been called the DBMS journal. It consists of the following entries (also known as log records):
a. [start_transaction, T]: Points out that transaction T has started execution.
b. [write_item, T, X, old_value, new_value]: Points out that transaction T has changed the value of database item X from old_value to new_value.
c. [read_item, T, X]: Points out that transaction T has read the value of database item X.
d. [commit, T]: Points out that transaction T has completed successfully, and affirms that its effect can be committed (recorded permanently) to the database.
e. [abort, T]: Points out that transaction T has been aborted.
Let us first describe the term relationships. What Are Relationships? A relationship can be defined as: A set of associations or connection, or A rule for communic
Define what Immediate database modification technique uses? Ans: Both undo and redo.
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
Determine the Three Views of Data We know that the similar thing, if viewed from dissimilar angles produces difference sights. Similarly, the database that we have formed alrea
Explain in details about the f unctions of DBA ?
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
Determine the Other System Design Issue How to realise subsystems; through hardware or software? How is object model mapped on chosen hardware software? Mapping
Determine the advantage of object-orientation Finally, object-orientation has advantage of continuity throughout analysis, persistent representation and design implementation.
What is an Operand? The data on which the operation is to be performed is known as an Operand
Competition entrants can be either Individuals, or Teams. A Team is usually sponsored by a business, and, in that case, the team members would all wear T-shirts with the sponsoring
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd