ER Diagram for Restaurant Management System | ERD

ER Diagram for Restaurant Management System

The Restaurant Management System ER Diagram reveals the relationships between restaurant entity sets that form its database design. This displays the logical structure of databases. It is done by identifying entities, their properties, and the interactions between them.

The Restaurant Management System database design is sketched out using ER diagrams. This database sketch for a restaurant management system is made up of entities, their attributes, and their relationships.

Restaurant Management System ER Diagram: Details

The table shows the name and details of the Restaurant Management System ER Diagram. It has a complete description of the project’s information.

Name:Restaurant Management System ER Diagram
Abstract:Restaurant Management System ER Diagram depicts the relationship between various entities. It can be thought of as a blueprint for your system (project) structure. 
Diagram:ER Diagram is also known as Entity Relationship Diagram
Users:School Librarian, Student (Book Borrowers), and School Admin
Tools Used:Diagraming tools that provide ER diagram symbols.
Restaurant Management System ER DiagramDetails

What is a Restaurant Management System?

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Restaurant management software aims to simplify some of the most common management duties in the restaurant industry. For example, it can combine information from different online booking channels so you can see all reservations and keep this information up to date to avoid double bookings.

This restaurant management system refers to all software that aids in the efficiency of foodservice operations. Restaurants, bars, bakeries, cafes, cloud (dark, virtual, ghost) kitchens, food trucks, and delivery services are all examples.

It performs a variety of duties that are required for a restaurant to function. It’s a catch-all word for various restaurant management tools and techniques that ensure top-notch customer service. The following items can be included in your RMS: Point-of-sale Orders and payments are entered into the system.

Definition of ER Diagram

The Restaurant Management System ER Diagram is referred to as the software database design. This ER Diagram is the graphical depiction of relationships between all the entities involved in the system. Its major components are Entities, Attributes, and Relationships.

The ER Diagram is used to build and troubleshoot the System’s relational database. It works best with DFD (Data Flow Diagram), which is responsible for data movement.

Importance of ER Diagram for Restaurant Management System

The importance of ER diagram for restaurant management system is to help in modeling its data storage or database. It is the basis of the project’s database foundation for construction. This entity-relationship diagram (ERD) also aids in defining the data types to be stored such as their attributes and characteristics.

In addition to that, the ER Diagram also describes how an entity interacts with other entities. All other real-world projects are presented with ER Diagrams (database designs).

Restaurant Management System ER Diagram

ER Diagram of Restaurant Management System shows the system entity and the supposed functions in each relationship. It is the supposed database design of the project. This conveys the data that would be present in the restaurant system, its characteristics, and its connection with other data (entity).

UML ER Diagram for Restaurant Management System
ER Diagram for Restaurant Management System

This diagram presents the entities’ relational model for the restaurant management system. It is used to enlighten you on how the back end of the database of the project works. The tables are made to meet the required specification of the system and provide much more specific details of each entity within the system.

ER Diagram for Restaurant Management System with Tables

These tables below provide the complete database table details such as Field NameDescriptionsdata types, and character lengths.

Table Name: Customer

cust_ID (PK)Customer IDInt11
nameCustomer NameVarchar255
contactCustomer Contact Int11
addressCustomer AddressText
usernameCustomer UsernameVarchar255
passwordCustomer PasswordVarchar255
Table Name: Customer

Table Name: Crew

crew_ID (PK)Crew IDInt11
nameCrew NameVarchar255
contactCrew Contact Int11
addressCustomer AddressText
usernameCrew UsernameVarchar255
passwordCrew PasswordVarchar255
Table Name: Crew

Table Name: Order Details

order_ID (PK)User IDInt11
crew_ID (FK)Crew IDInt11
cust_ID (FK)Customer IDInt11
food_ID (FK)Food IDInt11
dateOrder DateDate11
statusOrder StatusVarchar255
Table Name: Order Details

Table Name: Payment

pay_(PK)Payment IDInt11
cust_ID (FK)Customer IDInt11
order_ID (FK)Order IDInt11
delivery_ID (FK)Delivery IDInt11
datePayment DateDate
Table Name: Payment

Table Name: Menu

menu_ID(PK)Menu IDInt11
food_ID (FK)Food IDInt11
detailsMenu DetailsVarchar255
Table Name: Menu

Table Name: Food

food_ID (PK)Food IDInt11
nameFood NameVarchar30
statusFood StatusInt11
priceFood PriceInt11
Table Name: Food

Table Name: Delivery

delivery_ID (PK)Delivery IDInt11
order_ID (FK)Order IDInt11
dateDelivery DateDate
Table Name: Delivery

Table Name: Transaction

trans_ID (PK)Transaction IDInt11
trans_dateTransaction DateDate
cust_IDCustomer IDInt11
crew_ID (FK)Crew IDInt11
order_ID (FK)Order ID
report_dateIntD11ate of ReportDate
Table Name: Transaction

The tables given will be the basis for developers on how would they do the restaurant management system database design. It has a complete description of the database to be applied to the program. They will create a database with the attributes given as well as the value of each attribute.

ER Diagram for Restaurant Management System [PDF]

The ER Diagram for Restaurant Management System PDF provides the information explaining the concepts of the project database. You may apply this information to your capstone project. You can also use it directly or modify its content depending on your project’s requirements.

How to build ER Diagram for Restaurant Management System with Cardinality Ratio

Time needed: 5 minutes.

Steps in building the ER Diagram for Restaurant Management System with Cardinality Ratio.

  • Step 1: Familiarize the ER Diagram (Entity Relationship Diagram) Symbols and Cardinality

    Entity Relationship Diagram – shows the structure of data types in a project. It uses symbols to clarify its parts and relationships. Their symbols and applications must be familiarized before you build the ER Diagram.

    ER Diagram Symbols:
    Fields: Fields are the parts of a table that define the entity’s characteristics. In the database that the ERD models, attributes are commonly thought of as rows.
    • Keys is a technique to categorize data qualities. It is used to organize ER diagrams and assist users in modeling their databases to ensure that they are efficient. This is also used to connect different tables in a database.
    – Primary Key: identifies a single entity instance which means a unique attribute or set of attributes.
    – Foreign Key: is produced when data attributes have one too many relationships with other entities.

    ER Diagram Cardinalities:
    The styling of a line and its termination demonstrates cardinality and ordinality.
    The greatest number of times an instance of one thing can be related to instances of another entity is referred to as cardinality.
    While Ordinality refers to the fewest number of times a single entity instance can be linked to another.

  • Step 2: Finalize the entities included

    Start designing your ER Diagram by finalizing the entities that must be included in your restaurant management system. This entity is represented by a rectangle, and you’ll want to leave plenty of room for them in future phases so you may add them to your design.

    An entity set is a group of similar entities with shared properties. A table or a table’s attribute is an entity in a database management system. As a result, by depicting relationships between tables and their characteristics, an ER diagram displays the whole logical structure of a database.

  • Step 3: Add the attributes of each entity

    After finalizing the entities, think about the qualities you’ll need to characterize each entity. The details of the various entities outlined in a conceptual ER diagram are supplied as attributes. Characteristics of an entity, a many-to-many relationship, or a one-to-one relationship are all examples of attributes. Multivalued attributes can be assigned to several values.

    The entity’s attributes were represented by ovals and can be seen in the tables of the restaurant management system er diagram. These attributes can be a primary key or a foreign key in the database design of the project. The ER diagram design could also be converted to the database of the system by declaring your right entities and their attributes.

  • Step 4: Describe the relationships (cardinality) between entities and attributes

    To plot relationships between the ERD you will need the entities, their attributes, and relationships. You will base the data structure from the evaluated information to have the exact Entity Relationship Diagram.

    A relationship is an association that describes how two entities interact. At the connector’s endpoints, the cardinality is indicated by a crow’s foot. One-to-one, one-to-many, and many-to-many are the three most common cardinal relationships. It’s the maximum number of times an instance of one entity can be linked to instances of another entity.


You need to know the diagrams used to design and develop the Restaurant Management System. That is to help you create a fully-functional system with the use of ER Diagram. Creating it will help you perceive the back end of the software. This will hold all the data that’ll enter and exit the system.

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