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!
1.Which of the following plays an important role in representing informa-tion about the real world in a database? Explain brie?y.
1. The data de?nition language.
2. The data manipulation language.
3. The bu?er manager.
4. The data model.
2.Answer the following questions:
1. What is a transaction?
2. Why does a DBMS interleave the actions of di?erent transactions instead of exe-cuting transactions one after the other?
3. What must a user guarantee with respect to a transaction and database consis-tency? What should a DBMS guarantee with respect to concurrent execution of several transactions and database consistency?
4. Explain the strict two-phase locking protocol.
5. What is the WAL property, and why is it important?
1 prepare directories on your hard drive. place a small text file in one directory. use oracle package utlfile to read
Consider system which produces budget reports for department at university. For whichever system you select, answer the following design questions. Who will use output?
How big is a single interval in volts. Receivers have no choice but to decode the the binary sample value at the center of the interval. So, what would the received voltage of the sample be
Create a function that returns the day of the week for a specified date. Create a trigger that displays the message "Emp table updated" when an update to the employee table increases the employee's basic salary.
Explain how much the modulating signal power is required to generate 100 percent modulation? What is the approximate center frequency of filter required to pass the lower sideband?
assignment 4.3 complete problems 1-5 on page 283 of your textbook. test your sql code using oracle xe. once you are
Briefly explain the ARIES recovery algorithm, including the main phases, main principles and key ideas behind the algorithm such as WAL protocol and checkpointing etc.
Write a password protected console-based application, which enables you to create user accounts and specify the name of the file or directory to be shared with other users.
1. the appropriate sql statements for each query which should be copied from your sql code in mysql and pasted into
improved processesdatabases are installed to help solve problems improve processes or provide a benefit to the
SQL implements VPD using the VIEW object while Oracle10g provides specific functions for row-level security and fine-grained access.
Describe the normal forms violated in the following design and fix them to the third normal form.
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