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What is one to many relationship in database er diagram?
A one-to-many relationship means that one row in one of the tables will relate directly to many rows in the other table.
What is relationship in er diagram?
In Database Analysis and Design; the relationship in an ERD can only be mandatory or optional between two entities. Mandatory is where both entities must be present, whereas with optional, you don't always need two entities.
How is a many to many relationship modeled in an ER diagram?
When two entities can reference each other and each can contain multiple instances of the other, such a relationship is referred to as many-to-many. An example of such a relationship is a Book can contain several Authors while a given Author can write several Books. These type of relationships are modeled using an associative tables in databases.
What is a polygon with 9 angles?
a nonagon (non-er-gone) this website is really good for that sort of thing: .math.com/tables/geometry/polygons.htm
Which sentence makes more sense in this sentence you are more smarter or smart?
"You are smarter" is the correct form ("smarter" is the conventional way of saying "more smart"). This -er rule works for many other words:More tall --> "You are taller than her"More thin --> "You look thinner than you did a week ago"More smart --> "She is smarter than him"
How do you convert an entity relationship diagram to a table?
converting er diagram to table in dbms?
What are the differences between EER diagrams and ER diagrams?
Extended ER diagram is a variant of ER diagram. EER include ER diagram + hierarichal concept. Extended ER diagram is also called Enhance ER diagram(EER).
Drow a er diagram of a supermarket?
supermarket (ER-Diagram)
What is the ER diagram of a school management system?
An ER diagram for a school management system typically includes entities such as Student, Teacher, Course, Classroom, and Enrollment. Relationships between these entities can be depicted using cardinality and participation constraints to show how they are connected (e.g., a student enrolls in courses taught by teachers in specific classrooms). The ER diagram serves as a visual representation of the database schema for the school management system.
An ER diagram for a website?
I 'm need ER diagram for websit news
Where can you find an ER diagram on online shopping?
ER Diagram of online shopping
How can you make Er diagram of online shopping?
Er diagram of on line shopping
How do you draw a ER diagram for an automobile industry?
How do you draw a ER diagram for a automobile industry?
How do you draw the ER Diagram for online tour site?
draw the er diagram for tours
How do you draw the ER diagram of bus reservation?
You also can draw your ER diagram by so many ways. A software called Edraw is a better software to draw the ER diagram. This one has some ready-to-use ER diagrams templates conceptdraw.com/How-To-Guide/er-diagram
Examples of ER diagram for car company?
what is example of ER diagram for rental car company ?
How is Er diagram of human resource management?
Er diagram of human resource managenent system
