EER (Enhanced Entity Relationship) diagram: E Employee o date_hired: date works in Person o person_ID: int name : string address : string birth_date date phone_number : string is a is a v Volunteer o skill: string (N) Nurse o certificate: string is a (C) CareCentre o location : string isAppointedNurselnCharge is a P Physician o specialty : string o pager_number : string refers << (Pt, #FF7700) >> Patient o contact_date: date I) Item o item_number: int description string unit_cost: decimal consumes/isConsumed TTechnician o skill : string L Laboratory o location : string performs performs «(Tr, #FF7700)>> Treatment o treatment_ID: string B Bed o bed_number: int room_number: int s Staff o job_class: string «(Vt, #FF7700) >> Visit o date : date comments: string

EER (Enhanced Entity Relationship) diagram: E Employee o date_hired: date works in Person o person_ID: int name : string address : string birth_date date phone_number : string is a is a v Volunteer o skill: string (N) Nurse o certificate: string is a (C) CareCentre o location : string isAppointedNurselnCharge is a P Physician o specialty : string o pager_number : string refers << (Pt, #FF7700) >> Patient o contact_date: date I) Item o item_number: int description string unit_cost: decimal consumes/isConsumed TTechnician o skill : string L Laboratory o location : string performs performs «(Tr, #FF7700)>> Treatment o treatment_ID: string B Bed o bed_number: int room_number: int s Staff o job_class: string «(Vt, #FF7700) >> Visit o date : date comments: string

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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Customers ld Username Firstname Sumame Email PostalAddress Orders Id Customorld Created Status Orderitems Orderid StyleRequested SizeRequested Stockid Shirts Stockld Style Size StoreLocation Count Which of the following statements are correct for this entity rel ionship diagram? a. There is a many to many relationship between Orderitems and Orders Ob. There is a many to one relationship between Customers and Orders c. Orderltems is a bridge table Od. There is a many to one relationship between Orderitems and Shirts □e. Orders is a bridge table Of. There is a many to many relationship between Orderltems and Shirts
Rock Series: A site hosts many shows a year. Artists have a name and perform several times in a series (each is a show on a different date). Series have one or more artists and have a series name and a specified seating arrangement. A series is held in one (and only one) of several halls, each of which has a hall number. Represent this situation of shows and artists with an E-R diagram.
color descriprion model purchDate typelabel brand currentlocationID typelD typeDescr typelD carlD Car Belongs Car_Type Parked Rental CRC_Office Lessor Reservation Lessee Customer phone carlD SSN name officelD address customerID amount customerID mobile reservationID returnlocationID country state pickuplocationID pickupDate email returnDate 1) Add multiplicity and Normalize the ER diagram. 2) Identify Primary & Foreign keys. Thank you
Job portal system: This system allows the students to search and apply for jobs etc. online. The manager can use the system for posting and deleting job offers etc. 1.Create your own case study (problem statement) for the above application 2.Draw the use case diagram 3.Class diagram with at least 4 classes and explain all the relationships 4.Draw a DFD-0 for this application
1. Create an entity named Employee and Dependent and create a one-to-many mapping using JPA. EMPLOYEE has DEPENDENT (0,N (1,1) EMP NUM EMP LNAME EMP FNAME EMP_INITIAL EMP DOB EMP_HIREDATE EMP NUM DEP NUM DEP FNAME DEP DOB Write a main program to assign values to the Employee and Dependent entity using entity manager instance.
A _____ relationship exists when an association is maintained within three entities. strong binary ternary unary
Task Description: Consider the following relations for a company: Department (Did: integer, Dname: string, location: string) Employee (Eid: integer, Ename: string, Erank: integer, salary: real, DepartmentID, integer) Project (Pid: integer, DepartmentID: integer, Pname: string, budget: real, start year: integer) The “DepartmentID” fields in both Employee and Project are foreign keys referencing the “Did”field of the Department table. Use SQL to create a new database (named MyCompany), then use it to build the relations mentioned above. Place the constraints (e.g., default values) you find appropriate.
Task Description: Consider the following relations for a company: Department (Did: integer, Dname: string, location: string) Employee (Eid: integer, Ename: string, Erank: integer, salary: real, DepartmentID, integer) Project (Pid: integer, DepartmentID: integer, Pname: string, budget: real, start year: integer) The “DepartmentID” fields in both Employee and Project are foreign keys referencing the “Did”field of the Department table. Through Java application, use SQL to insert (random but meaningful) data records in the above tables:1) Create two different departments (named: Marketing and Human Resources)2) Create at least three employees per department (6 employees in total). A rank of an employee is an integer value between 1 and 3.3) Create at least three different projects per department (6 projects in total). The start year is between 2018 and 2020.
4. Write the business rules against the following E-R diagram. movie_cast act_id mov_id |integer integer char (30) actor genres Y act_id act_fname integer char (20) Y gen_id integer char (20) role gen_title act_Iname act_gender char (20) char (1) movie mov_id mov_title mov_year mov_time mov_lang mov_dt_rel mov_rel_country char (5) integer char (50) integer integer char (50) date director movie_genres Y dir_id integer integer char (20) char (20) mov_id dir_fname gen_id integer dir_Iname rating mov_id rev_id integer integer integer num_o_ratings integer reviewer movie_direction rev_id integer char (30) dir_id integer rev_stars mov_id integer rev_name w3resource.com 81 8 8Ị 8Ị 81 81
What is the cardinality of Property_Service to GG_Service:
p A:10 % E9 M -define attribute * Your answer - define key attribute Your answer - The object allow us to modal the and the operator allow us to modal Your answer -define derived attribute: * Your anSwer