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!
Problem 1:
Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room
Based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?
Problem 2:
Research the definition of a "minimal cover". Explain it in your own words and give an example.
University XYZ needs a database that keeps track of students, what classes they taken and the grades for each of the classes.
Create a context level DFD. You should take your DFD to your tutorial for feedback before starting on the ER.
Explain what information is available from relational database containing one relation with attributes Name, Employee identification number, and Address which is not available.
Compare the two non-sequential file structure models. What advantages does the first one have over the second and what advantages does the second have over the first?
write a program to keep track of a CD or DVD collection. This can only work exclusively with either CDs or DVDs since some of the data is different. The data will be stored ina file. The data from the file will be stored ina text file as records. Eac..
Write the procedure named Get_frequencies which constructs character frequency table. Input to procedure must be a pointer to the string, and pointer to array of 256 doublewords.
Create the DigitalX database. Design tables and relationships and ensure that email addresses may only be used once in the database.
Select an appropriate statistical measure to compare consistency of sales. Make the calculations and write a report. In your calculations, include the mean sales for each salesperson.
At this point in the design process, you would have a detailed physical schema created for a database. How would you approach converting your schema into a database, complete with sample data? Explain your approach in two to three paragraphs.
Design a database for Ray. For each director, list his or her number and name and the year he or she was born. If the director is deceased, list the year of death.
Create mission statements and mission objectives for database systems explained in the following case study EasyDrive School of Motoring. Also in mission objectives include 10 reports that the database system must support
Draw an inheritance hierarchy to represent a shoe object. The base class should have derived classes of Dress Shoes, Tennis Shoes and Boots.
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