Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Entity Relationship Model, or ER Model, is a high-level conceptual data model diagram. To create a well-designed database, rigorous analysis of the data needs is assisted by the ER model. The ER Model depicts actual people, things, and the connections between them. Before deploying your database, it is recommended that you create an ER Model in a DBMS.
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- show me a picture of how to Create an ERD diagram using Visio or a related tool with tables, keys, columns, and relationships. Primary and Foreign keys need to be identified in this diagram.arrow_forwardDesign an E-R model for garage repair shop based on the following order form: DATE: UTD WORK ORDER #: GARAGE REPAIR ORDER NAME ACCOUNT SIGNATURE WITH AUTHORITY FOR ACCOUNT DEPARTMENT EXTENSION DESCRIPTION OF PROBLEM LICENSE * MILEAGE YEAR MAKE MODEL QTY PART NO. PARTS UNIT PRICE SERVICES PERFORMED (1) Labor SUBLET (2) Parts MECHANIC SIGNATURE UTD Labor TOTAL PARTS & LABOR Revised 8/oearrow_forwardTransform the above ER diagram into Relational Schemas Only Anserarrow_forward
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- Please create the use case descriptions for these photos. Please look at a use case description template as an example.arrow_forwardIdentify the class of entity represented by each of the lettered symbols in the REA model.arrow_forwardDraw 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…arrow_forward
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