Question: Code the following in relational calculus: 1) Find persons who go only to hospitals that offer some of the treatments they like 2) Find every

to hospitals that offer some of the treatments they like 2) Find Code the following in relational calculus:

1) Find persons who go only to hospitals that offer some of the treatments they like

2) Find every treatment offered by at least one hospital and effects the COVID-19 disease

Q1. Consider the following tables (relations) that contain information (all stored as names) about persons visiting hospitals, treatments offered by hospitals, treatments liked by persons, and treatments effective for diseases. A person can like several treatments; a treatment can be liked by many persons. A person can go to several hospitals, and a hospital may be visited by many persons. A hospital can offer many different treatments, and a treatment can be offered by several hospitals. A treatment may be effective for several diseases and a disease may be effected by many treatments. Please note that in all the queries at least one some means Visits(person, hospital) Offers(hospital, treatment) Likes(person, treatment) Effects(treatment, disease)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Condensed financial data of Pat Metheny Company for 2025 and 2024 are presented below. Additional information: During the year, $70 of common stock was issued in exchange for plant assets. No plant...

Find the following in Relational Algebra: 1) Find every person who does not visit any hospital which offers a treatment effective for influenza? 2) Find every hospital which offers treatments liked...

Questionsunder caserequirements: case 1-6 can negotiate for price. so much info including references... St George Hospital: Flexible Budgeting, Volume Variance, and Balanced Scorecard Performance...

3. Consider the current budgeting process at St George Hospital and address the following: a. What amount of funds (revenue) will St George Hospital receive? b. Determine whether the Orthopedic Unit...

Q1. Consider the following tables (relations) that contain information (all stored as names) about persons visiting hospitals, treatments offered by hospitals, treatments liked by persons, and...

Code a) and b) in SQL Q1. Consider the following tables (relations) that contain information (all stored as names) about persons visiting hospitals, treatments offered by hospitals, treatments liked...

15. Identify several of the operating metrics (ratios) at the end of the HCA July 29 earnings announcement. Explain how they describe specific trends that affect HCA?s financial results. Which of...

CHAPTER 8 Hospitals and Health Systems Stephen J. Williams and Paul R. Torrens W I L S CHAPTER TOPICS O History of the Hospital N The Scope of the Industry , Structure of Hospitals and Health Systems...

I am working on a group project and I am working on assignment 5. I have attached the assignment and the financial report I need to work off of. I would like some one to help me with this. Please let...

Explain the difference between cash flows from financing and investment activities.

Pure milk costs Rs. 20 per litre. After adding water the milkman sells the mixture at the rate of Rs. 18 per litre, thereby making a profit of 25%. In what ratio does he mix the two? 1. 18:7 18:9 3....

6. What is meant by liquidity? Rank the following assets from one to five in order of liquidity. a. Goodwill. b. Inventory. c. Buildings. d. Short-term investments. e. Accounts receivable.

Q2. Conversion of glycol diacetate into 1,2-ethanediol (glycol) occurs via a reaction of the type Ak,B_k, as follows: B ki OH kz OH lang HO (two moles of acetic acid are also produced but are not...

If the tax rate is 40 percent, compute the beforetax real interest rate and the after-tax real interest rate in each of the following cases. a. The nominal interest rate is 10 percent and the...

Assume that the reserve requirement is 20%. Also assume that banks do not hold excess reserves and there is no cash held by the public. The Federal Reserve decides that it wants to expand the money...

It is often suggested that the Federal Reserve try to achieve zero inflation. If we assume that velocity is constant, does this zero-inflation goal require that the rate of money growth equal zero?...