Reference no: EM131182329
You viewed two video resources, Designing a Database and Relational Schema of the "Priscilla/Dave" project. At the end of the logical design phase, there were five tables (Pet, PetOwner, IdTag, PetFood, and Toy).
(a) Find the names of pets owned by anyone whose first name is John.
Note: Use the SELECT command.
(b) As there is a many-to-many relationship (between Pet and Toy) that cannot be expressed in a Relational database, an additional table (PetToy) was introduced that links the two tables. Thus, the final design is: Priscilla is interested in providing additional services to her customers, as well as having a better control on her toys and food suppliers.
For additional services, she wants to add to the database the names of veterinary doctors in the neighborhood. Each customer could choose the vet he or she wants to work with, and that vet will treat all the customers' pets. Priscilla also likes to add supplier data to her database.
Each PetFood item is supplied by just one FoodSupplier (but a supplier can supply many food items). A Toy can be supplied by multiple ToySuppliers.
A ToySupplier can supply many Toys. Extend the design to include Veterinarians, PetSuppliers, and ToySuppliers
|
Generate 4096 data samples from a chirp pattern
: (1) Generate 4096 data samples from a chirp pattern. One may extend sampling size from 4096 to million to mimic real big data.
|
|
Find the speed and the mass of the object
: An object has a kinetic engery of 275J and a momentum of magnitusde 25.0 kg*m/s. Find the speed and the mass of the object.
|
|
Was pettit behavior unprofessional or immoral
: Do you believe the Board of Education violated her right to privacy? Were they justified in firing her? Explain two to three (2-3) major reasons why or why not. Was Pettit's behavior unprofessional or immoral
|
|
Reactance of the capacitor-reactance of the inductor
: Find the following: reactance of the capacitor, reactance of the inductor, current, apparent power, real power, reactive power, power factor angle, and power factor.
|
|
Designing a database and relational schema
: Find the names of pets owned by anyone whose first name is John - Extend the design to include Veterinarians, PetSuppliers, and ToySuppliers
|
|
Compositions and special features of the atmospheres
: 1. What is the main compositions and special features of the atmospheres of the planets in our Solar System? 2. What are explanations for the formations of these various atmospheres, and why are they so different from that of Earth's?
|
|
Calculate the circuit impedance
: A 200 rms ac supply feeds a 100mH inductor in series with a 800 ohm resistor.Calculate the circuit impedance, current , phase angle, and power factor when the frequency is 955Hz.
|
|
Explain the differences between the two research approaches
: Explain the differences between the two research approaches. Explain why each researcher chose the correct research approach (quantitative or qualitative) for their particular research question.
|
|
Determine what the side of the square cut from the corners
: A 12 centimeter square sheet of cardboard is to be made into a box by cutting equal squares from each corner and then folding up its sides. Determine what the side of the square cut from the corners should be if the box is to have as large a volum..
|