The following information is required in the ward computer management system of a hospital: Department: Department address, department telephone Ward: ward number, bed number, department name, department name Doctor: name, title, department name, age, work permit number Patient: medical record number, name, gender, diagnosis, attending doctor, ward number Among them, a department has multiple wards and multiple doctors; A ward can only belong to one department; A doctor only belongs to department, but can be responsible for the diagnosis and treatment of multiple patients. There is only one doctor in charge of a patient. (1) Draw the ER diagram according to the above semantics, and indicate the attribute of the entity, the type of connection and the identifier of the entity in the ER diagram. (2) The ER model is transformed into a relational one

The following information is required in the ward computer management system of a hospital: Department: Department address, department telephone Ward: ward number, bed number, department name, department name Doctor: name, title, department name, age, work permit number Patient: medical record number, name, gender, diagnosis, attending doctor, ward number Among them, a department has multiple wards and multiple doctors; A ward can only belong to one department; A doctor only belongs to department, but can be responsible for the diagnosis and treatment of multiple patients. There is only one doctor in charge of a patient. (1) Draw the ER diagram according to the above semantics, and indicate the attribute of the entity, the type of connection and the identifier of the entity in the ER diagram. (2) The ER model is transformed into a relational one

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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Concept explainers

Data Dictionary

A database management system has an entity-relationship diagram, data dictionary, and data model as some of its key components, which are tools for the users who are managing the database. One of them is the data dictionary. The data dictionary can also be called metadata. By definition, metadata is a generic concept in the world of information and technology. An example of metadata could be meta-information about a media file or an image file, like author, location, last updated, size, etc. The contents of a data dictionary are names, attributes, and properties of main data elements which are captured during an experiment or stored in an information system, for example, databases. We can also call it a central repository of information about the main data.

Question

9. The following information is required in the ward
computer management system of a hospital:
Department: Department name, department
address, department telephone
Ward: ward number, bed number, department
name
Doctor: name, title, department name, age, work
permit number
Patient: medical record number, name, gender,
diagnosis, attending doctor, ward number
Among them, a department has multiple wards and
multiple doctors; A ward can only belong to one
department; A doctor only belongs to
department, but can be responsible for the
diagnosis and treatment of multiple patients. There
is only one doctor in charge of a patient.
(1) Draw the ER diagram according to the above
semantics, and indicate the attribute of the entity,
the type of connection and the identifier of the
entity in the ER diagram.
(2) The ER model is transformed into a relational
model, and the primary key and foreign key of each
relational schema are pointed out.
one

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