Q3. Map the following relational model to an ER Model EMPLOYEE PK FK: EmpID EmpID EmpFName EmpLName Supervisor SCHEDULE FK: EMPLOYEE.EmpID EmplD FK: MEDICALCENTER.CenterID HoursScheduled CenterID PK MEDICALCENTER FK: EMPLOYEE EmpID Manager PK CenterID CName DOCTOR PK DocID DocFName DocLName Specialty PATIENT PK FK:DOCTOR.DocID PatientID PFName PLName DocID OUTPATIENT PK /FK: PATIENT.PatientID PatientID VisitDate INPATIENT PK /FK: PATIENT.PatientID PatientID AdmissionDate ΕΧΑΜΙΝΑΤION FK: EMPLOYEE.EmpID FK: PATIENT.PatientID PatientID EmpID Height Weight BloodPressure Temperature PK

Q3. Map the following relational model to an ER Model EMPLOYEE PK FK: EmpID EmpID EmpFName EmpLName Supervisor SCHEDULE FK: EMPLOYEE.EmpID EmplD FK: MEDICALCENTER.CenterID HoursScheduled CenterID PK MEDICALCENTER FK: EMPLOYEE EmpID Manager PK CenterID CName DOCTOR PK DocID DocFName DocLName Specialty PATIENT PK FK:DOCTOR.DocID PatientID PFName PLName DocID OUTPATIENT PK /FK: PATIENT.PatientID PatientID VisitDate INPATIENT PK /FK: PATIENT.PatientID PatientID AdmissionDate ΕΧΑΜΙΝΑΤION FK: EMPLOYEE.EmpID FK: PATIENT.PatientID PatientID EmpID Height Weight BloodPressure Temperature PK

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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5. For the following simple seven-activity project, develop a precedence network, calculate all relevant characteristics of each activity (ES, EF, LS, LF, TF), and calculate the project duration. Then draw a time-scaled network and under it a labor resource histogram for the ES. Do the same for the LS. In both cases, use the maximum allowable number of workers. Make adjustments to the noncritical activities, within the constraints of the ES and LF and the maximum and minimum workers allowed to provide what you feel is the best labor distribution. Please use Table B (Table B.pdf) Lastly, Explain in detail what do you feel is the biggest problem with the ES and LS configurations, and how has this been alleviated with your solution?
The entity relationship diagram below models the components of a database belonging to TrueHealth, a network of medical centers. The database allows TrueHealth to keep track of doctors at each practice and their patients. Patient PK Pat ID Consultation Doctor PK,FK1 Doc_ID PK Doc ID 1..1 0.. 1..1 Pat_Name PK, FK2 Pat ID Doc_Name Pat Age Con_Date Doc_EmployDate Pat_Gender FK Prc_ID 0..* 1..1 Practice PK Prc ID Prc_Name Prc_YearEstablished Prc_Province Write SQL statements for the following: Create all the necessary tables. Name the tables; and all their attributes appropriately. Insert TWO records into each of the tables created to demonstrate that you have created them correctly. List all the TrueHealth practices based in Gauteng. List, in alphabetical order, the names of all patients who had consultations after 01 January 2018. Which practice (by name) has the most recent hire (i.e. doctor with latest employment date)? Which doctor has had the least number of consultations? Give the…
This Schema diagram to ER diagram
13. An unnormalized table means that: a. it has repeating groups. b. it has partial and transitive dependencies. c. it is in INF. d. it has no partial and transitive dependencies. 14. The four elements of a data model are Entities, Attributes, Relationships and a. Entity-Relationship diagram b. Primary Keys c. Supertypes and Subtypes d. Constraints
3. Use case model: a. What does a use case diagram depict? b. Create a use case model for a travel agency. This should include all 3 parts of the use case model.
The "Title" attribute in "BOOK" Entity Type is considered as: Main Sub Annual ISBN Author Title Sal ВОOK O 1. Key Attribute O 2. Composite Attribute O 3. Multi-Valued Attribute O4 Derived Attribute The "SUPERVISES" Relationshin is considered ag
Draw an E-R diagram based on the following relational design.SeniorTeachers(teacherId, name, dept, division)TeachingAssistants(teacherId, name, dept, division).# These can be currently registered students who are employed part-time as teaching assistants,# or they can be PhD students who are employed full-time.Programmes(programmeCode, programmeName, dept, director)director → SeniorTeachers.teacherIdCourses(courseCode, courseName, credits, level, dept, division, ownedBy)ownedBy → Programmes.programmeCode# level is one of “first cycle” or “second cycle”.programmeCourses(programme, academicYear, studyYear, course, courseType)programme→ Programmes.programmeCodecourse → Courses.courseCode# studyYear is “1” or “2” for Master’s programmes and “1”, “2” or “3” for Bachelor’s programmes.# courseType is one of: “compulsory”, “compulsory-elective” or “elective”.# Programmes can include different courses in different academic years.# The same course could have a different courseType in different…
q30
Please help me answer the following questions
Course : Database system
A relation FarmVisit is defined below with attributes in the table headings. FarmVisit visitorID visitorName date farmID farmName t1 H001 John 1 Feb 2021 A10 Green Field t2 Н005 Ashley 1 Jan 2021 A10 Green Field t3 но05 Ashley 1 Feb 2021 A10 Green Field t4 H005 Ashley 15 Apr 2021 H02 Есо t5 Но06 Ashley 15 Apr 2021 A11 Green Field a) Write down examples of tuples (i.e., tl, t2) to show neither of the following is a functional dependency: (i) visitorID -> date (ii) date -> farmID b) Write down the functional dependency (FDs) using the above data, which can represent all possible data. The FDs should be non-trivial and the determinants of the FDs should contain minimal number of attributes required. c) Using the tuples given, can (visitorID, farmID) be the primary key of FarmVisit? Explain why. d) What the highest normal form by which the FarmVisit relation can be classified? Explain why.
Let's break down the information into entities, attributes, and relationships: Entities: 1. Ship - ShipID (Primary Key) - ShipName - ShipType 2. Captain - CaptainID (Primary Key) - CaptainName - CaptainLicense 3. ShipmentTrip - TripID (Primary Key) - DeparturePort - ArrivalPort - RouteDetails 4. ShipmentManifest - ManifestID (Primary Key) - Date - GoodsList 5. Goods - GoodsID (Primary Key) - GoodsName - GoodsType (BM or LM) 6. Port - PortID (Primary Key) - Street - City - State - PostalCode - Country Relationships: - Ship to ShipmentTrip (Many-to-Many): - Ship can participate in multiple ShipmentTrips, and a ShipmentTrip can involve multiple Ships. Create a junction table `Ship_ShipmentTrip` with attributes `ShipID` and `TripID`. - Captain to ShipmentTrip (Many-to-Many): - A Captain can be assigned to multiple ShipmentTrips, and a ShipmentTrip can have multiple Captains. Create a junction table `Captain_ShipmentTrip` with attributes `CaptainID` and `TripID`. - Captain to Ship…