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!
Recent changes in privacy laws have disallowed organizations from using Social Security numbers to identify individuals unless certain restrictions are satisfied. As a result, most U.S. universities cannot use SSNs as primary keys (except for financial data). In practice, Student_id, a unique identifier assigned to every student, is likely to be used as the primary key rather than SSN since Student_id can be used throughout the system.
a. Some database designers are reluctant to use generated keys (also known as surrogate keys) for primary keys (such as Student_id) because they are artificial. Can you propose any natural choices of keys that can be used to identify the student record in a UNIVERSITY database?
b. Suppose that you are able to guarantee uniqueness of a natural key that includes last name. Are you guaranteed that the last name will not change during the lifetime of the database? If last name can change, what solutions can you propose for creating a primary key that still includes last name but remains unique?
c. What are the advantages and disadvantages of using generated (surrogate) keys?
In addition to the other elements of the planned strategic IT operation there will be a need to develop and implement an IT Help Desk to better facilitate the support of Northwest Georgia Auto Parts' internal IT issues
The inner loop of the cubic maximum subsequence sum algorithm performs N(N+1)(N+2)/6 iterations of the innermost code. The quadratic version performs N(N + 1)/2 iterations.
Assuming a 4 bit binary representation using excess 7 list all bit sequences for integers -7 to +8
Draw a finite-state machine for tennis scoring. The rules of tennis are as follows. To win, you need at least four points and you must have at least two points more than your opponent.
Q1: Describe WMANs, the technologies used to implement them, and where they are predominantly used Q2: What should be included in the narrative of a site survey report? Q3: Explain how an attacker can force a renegotiation to capture an SSID, even th..
Q - Distinguish between concurrent study and simultaneous. A single processor can execute two or more programs concurrently but not simultaneously. Why ?
What is the difference between CDMA and LTE? Is one technology better than the other?
Explain Java data streams. How do we move different types of data from one place to another in Java. What different types of data streams are there?
Over the past 3 years, a cloud service has been unavailable for a total of 36 hours, primarily due to a denial of service attacks. Additionally, the physical server hosting the cloud service crashed once. It took the cloud provider 4 days to replace ..
Write the definition of the function, leavesCount, that takes as a parameter a pointer to the root node of a binary tree and returns the number of leaves in a binary tree. Add this function to the class binaryTreeType and create a program to test ..
How do we make Jar files? What is a Jar file? How do we control what is in them? How do we make a Jar file executable?
Suppose that d's access control list gives p full (read, write, append, and execute) rights to d. In which ring(s) should p execute for following to occur?
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