Create a query that will display the Appointment date, the patient information the bill status and the amount. (You may or may not need to use all four tables.)

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
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  1. Create a query that will display the Appointment date, the patient information the bill status and the amount. (You may or may not need to use all four tables.)

 

 

### Introduction to Basic Database Design

In this section, we will explore a simple database schema often used in medical appointment systems. This example includes four main entities: Doctor, Patient, Appointment, and Bill. These entities are represented in an Entity-Relationship Diagram (ERD).

#### Entities and Attributes

1. **Doctor**
   - **Primary Key (PK):** Doctor Id
   - **Attributes:**
     - Doctor First Name
     - Doctor Last Name

2. **Patient**
   - **Primary Key (PK):** Patient Id
   - **Attributes:**
     - Patient First Name
     - Patient Last Name

3. **Appointment**
   - **Primary Key (PK):** 
     - Appointment Date
   - **Attributes:**
     - Appointment Time
     - Appointment Duration
     - Appointment Reason
   - **Foreign Keys (FK):**
     - Bill Number
     - Patient Id
     - Doctor Id

4. **Bill**
   - **Primary Key (PK):** Bill Number
   - **Attributes:**
     - Bill Date
     - Bill Status
     - Bill Amount

#### Relationships

The diagram also depicts the relationships between these entities:
- A **Doctor** entity is connected to the **Appointment** entity through the foreign key **Doctor Id**. This implies that each appointment is linked to one doctor.
- Similarly, the **Patient** entity is connected to the **Appointment** entity through the foreign key **Patient Id**, indicating that each appointment is associated with one patient.
- The **Bill** entity is connected to the **Appointment** entity through the foreign key **Bill Number**. This suggests that each bill is generated for one specific appointment.

### Explanation of the Diagram

- **Connection Lines:** These lines indicate relationships between entities. Each connection implies that one entity uses the primary key of another entity as its foreign key.
- **Primary Keys (PK):** Unique identifiers for table records ensuring that each entity can be distinctly identified.
- **Foreign Keys (FK):** Attributes in one table that create a link to the primary key of another table, establishing relationships between entities.

### Conclusion

Understanding this basic ERD can help in designing efficient database systems, especially in contexts such as medical appointments where tracking interactions between doctors, patients, and billing details are crucial. The relationships and structured data help maintain organized, scalable, and retrievable information.
Transcribed Image Text:### Introduction to Basic Database Design In this section, we will explore a simple database schema often used in medical appointment systems. This example includes four main entities: Doctor, Patient, Appointment, and Bill. These entities are represented in an Entity-Relationship Diagram (ERD). #### Entities and Attributes 1. **Doctor** - **Primary Key (PK):** Doctor Id - **Attributes:** - Doctor First Name - Doctor Last Name 2. **Patient** - **Primary Key (PK):** Patient Id - **Attributes:** - Patient First Name - Patient Last Name 3. **Appointment** - **Primary Key (PK):** - Appointment Date - **Attributes:** - Appointment Time - Appointment Duration - Appointment Reason - **Foreign Keys (FK):** - Bill Number - Patient Id - Doctor Id 4. **Bill** - **Primary Key (PK):** Bill Number - **Attributes:** - Bill Date - Bill Status - Bill Amount #### Relationships The diagram also depicts the relationships between these entities: - A **Doctor** entity is connected to the **Appointment** entity through the foreign key **Doctor Id**. This implies that each appointment is linked to one doctor. - Similarly, the **Patient** entity is connected to the **Appointment** entity through the foreign key **Patient Id**, indicating that each appointment is associated with one patient. - The **Bill** entity is connected to the **Appointment** entity through the foreign key **Bill Number**. This suggests that each bill is generated for one specific appointment. ### Explanation of the Diagram - **Connection Lines:** These lines indicate relationships between entities. Each connection implies that one entity uses the primary key of another entity as its foreign key. - **Primary Keys (PK):** Unique identifiers for table records ensuring that each entity can be distinctly identified. - **Foreign Keys (FK):** Attributes in one table that create a link to the primary key of another table, establishing relationships between entities. ### Conclusion Understanding this basic ERD can help in designing efficient database systems, especially in contexts such as medical appointments where tracking interactions between doctors, patients, and billing details are crucial. The relationships and structured data help maintain organized, scalable, and retrievable information.
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