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

See similar textbooks

Similar questions

Normalization Show all the steps as you perform normalization for each problem up to 3NF. State your final relation to schemas in 3NF.
which rules apply to desigining table with less redundancy? a) Binary Relationship b) Reflective Relationship c) Weak entity d) Normal form
Explain three cases when a surrogate key should be generated in place of the main key of a relation.
how to map ERR model to relational model
What are three cases when a surrogate key might be used in place of a relation's main key?
Map the EER diagram to a relational schema and transform the relation into 3NF
Use the technique of normalization to validate the structure of your relational schema. Demonstrate that each of your relations is in third normal form (3NF) by displaying the functional dependencies between attributes in each relation. Note, if any of your relations are not in 3NF, this may indicate that your ER model is structurally incorrect or that you have introduced errors in the process of deriving relations from your model.
TF (c) If a relation is not in BCNF, then it has at least three attributes in the schema.
Convert the ER diagram to relations in the normal manner to capture as many constraints as possible, and then identify which of the answers is a relation schema. A. Dependents(ID, name, bDate) B. Employees(ID, name, street, city, state, phones, sDate, lengthEmp) C. Coverage(ID, name) D. Employees(ID, name, street, city, state, sDate, lengthEmp)
Map the EER diagram to a relational schema and transform the relation into 3NF
Describe the First Normal Form (1NF) and the conditions that a table must meet to be considered in 1NF.
Explain the First Normal Form (1NF) and provide an example of a non-1NF table. Describe the steps to bring it into 1NF.