instructor ID патe first_name middle_inital last_name address street street_number street_name apt_number city state zip {phone_number} date_of_birth age ( ) Figure 8.7 E-R diagram with composite, multivalued, and derived attributes.
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Consider the E-R diagram in Figure 8.7 showing entity set instructor.
Give an SQL schema definition corresponding to the E-R diagram, treating
phone number as an array of 10 elements, using Oracle or PostgreSQL syntax.
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- 2- Design a class diagram of a course registration system. Note: utilize various class relations: generalization, aggregation, composition, and association; the class diagram should include but not be limited to the following class names User, Student, Instructor, Admin, Course, LogonPage, AddPage, DropPage, ChangePage, PrintPage, QueryPage, CoursenfoDB, StudentInfoDB, InstructorinfoDB, AdmintnfoDB, and EntireDB.What is it called when multiple touching entities are linked together when selected?Examine the following entity relationship diagram, and select all statements that correctly describe this diagram. PHOTOGRAPHER PK PHOTOGRAPHER ID FIRST_NAME LAST_NAME ++ uses PK +PK,FK1 CAMERA MODEL NR PHOTOGRAPHER ID DESCRIPTION a. The CAMERA entity has a composite primary key. Ob. The existence of each CAMERA instance depends upon the existence of a PHOTOGRAPHER instance. c. Each CAMERA instance is associated with exactly one PHOTOGRAPHER instance. d. A PHOTOGRAPHER uses one or more CAMERAS. e. Both PHOTOGRAPHER and CAMERA are strong entities.
- When one object has the primary key of another entity as an attribute, a Parent-Child relationship is established between the two tables. The tables are linked in a B many-to-many fashion. C The tables are modeled as a network. D Similar to a one-to-many connection, the tables are interconnected.Generate an Activity UMLdiagram that starts with the customer connecting with the web site and ends with the order available for pickup or ready for delivery. This should be a very focused and specific UML Activity diagram. Note that the workers will also interact with the process at some point - identify the step or steps where the workers interact with the system. The activity diagram must contain a minimum of 15 elements. *** Number each element of the activity diagram. ***Create an Access Matrix for the given domain structure: D1: D2: D3: D4:
- Learning Objective PI3.2 Understand the process of entity-relationship modeling. STEP 1: Background It is very important that you understand the connections among entities, attributes, and relationships. This section has defined each of these terms for you. Typically, entities are described by their attributes, and they are related to other entities. For example, if "student name" is the entity, then age, gender, country of origin, marital status, and other demographic data are the attributes (characteristics) of that particular student. That student is also related to other entities such as financial information, major, and course information. STEP 2: Activity An entity-relationship model is one of the most challenging aspects of designing a database because you have to (1) understand the rules that govern how processes work and (2) be able to define and describe these rules in a picture. This section has provided you with the necessary tools to draw a basic ER model. Imagine the…If adding a data object to a data model is not recommended, why is this the case?database fundementals: GIVEN: Participant (PNumber, LastName, FirstName, Address, City, State, PostalCode, PhoneNumber, DOB) SK-->FirstName AK-->PhoneNumber Class(ClassNum, Description, NumOfPerson, Fee) SK-->Description ClassParticipant(PNumber, ClassNum, DataOfClass) FK-->PNumber-->Participant FK-->ClassNum-->Class Expand the database design so it will support the following report: Colonial Adventure Tours needs to send an invoice to each participant, listing the classes in which the participant is enrolled as well as the total fees for the classes. The invoice should include the participant’s full name and address. Answer in both DBDL and E-R diagram
- Why is it that adding a data object to a data model is not recommended?SUPLIER CUSTOMERS #id buy # id *name * tax number * product o email # name sell * address Find the mistakes in the ERD related to Entities, Attributes and Relationships. Explain reason for these mistakes. Make necessary changes on ERD and present only effected structures (entities, attributes and relationships) A- B IReview: Entity-Relationship (ER) "crow-feet symbol" О Опе-to-manпy: one sale person can Salesperson have many Serves Мапy-to-many customers Entity-Relationship (ER) Diagram for a Customer Places Customer Order Database urayram Tor a customer order database Includes Line Specifies Orders Product items Development of ER diagrams helps ensure that the logical structure of application programs is consistent with the data relationships in the Generates One-to-one relationship Invoice database. © 2013-2019 Cengage learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. TBC: Instructions: Draw One integrated ER diagram on slide # 28 to show the relationships of the below tables Each 'student-profile' has many 'student- financials' 1. 2. Each 'student-profile' can take many 'student-courses' 3. Each…