Discuss with appropriate examples the types of relationships in a database. Give one reference with your answer.

Explain the statement, Some physical database design techniques change the logical design, and some do not. Can you please help without plegerism please?

NOTE: please explain better .      Question 4  You have just been hired as a consultant for a big Health Care provider. Impressed by your background in databases, they want you to completely redesign their database system. Talking with the people at the HC provider, you get the following information (be very careful on some of these attributes, and apply everything you have learned to this point:   - The database contains information about patients, hospitals and doctors.   - Each patient has an ID, first name, last name, address and age.  A patient is    uniquely identified by his or her ID.   - Each hospital has an id, name and budget. The id uniquely identifies a hospital.   - Each doctor an id, a full name, email address and a favorite movie. The id   uniquely identifies a doctor.   - Each patient can be treated at many hospitals, a hospital can treat many patients.   - Each doctor can work at only one hospital.  A hospital can have many doctors.   4.1)  Draw the…

Assignment Brief: Some of the most difficult decisions that you face as a database developer are what tables to create and what columns to place in each table, as well as how to relate the tables that you create. Normalization is the process of applying a series of rules to ensure that your database achieves optimal structure. Normal forms are a progression of these rules. Each successive normal form achieves a better database design than the previous form did. Based on your understanding for the various normal form respond to the following problems and provide the optimal answer/solution. Problem#1: 1st Normal Form (1NF) Consider the Students table, with the primary key underlined, and the following data: Students: Alpha 100111 Email doe@usna.edu Name Courses GradePoints NN204, SI204, IT221 SM223, EE301 SI204 John Doe 2,3,3 Matt Smith 092244 113221 smith@usna.edu black@usna.edu 4,4 Melinda 3 Black NN204, SI204, IT221 090112 Tom Johnson Johnson@usna.ed 4,2,3 u a) Is the Students table…

Database Foundations: Design a database to produce the following reports. Do not use any surrogate keys in your design. For each guide, list the guide number, guide last name, guide first name, address, city, state, postal code, telephone number, and date hired. For each trip, list the trip ID number, the trip name, the location from which the trip starts, the state in which the trip originates, the trip distance, the maximum group size, the type of trip (hiking, biking, or paddling), the season in which the trip occurs, and the guide number, first name, and last name of each guide. A guide may lead many trips and a trip may be led by many different guides. For each client, list the client number, client last name, client first name, address, city, state, postal code, and telephone number

Describe the ACID properties in the context of database transactions. Why are they important, and when might you choose to relax these properties?