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Information flow diagram is used to visually represent the flow of information within a system, showing how data is input, processed, and output. Entity Relationship diagram is a visual representation of the relationships between entities in a database, illustrating the structure of the database and how data is organized. Both diagrams help in understanding and designing systems more effectively.
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Erd diagram on patient information system?
In an Entity-Relationship Diagram for a patient information system, you may have entities like Patient, Doctor, Appointment, Prescription, and Medical Record. The relationships between these entities could include a Patient having many Appointments, a Doctor treating many Patients, and a Prescription being linked to a specific Patient. Attributes for each entity would include things like patient ID, doctor ID, appointment date, prescription details, and diagnosis information.
What is the difference between associative entity and relationship with attribute?
An associative entity is used to represent a many-to-many relationship between two or more entities in a database, while a relationship with attribute represents additional information or properties about the relationship itself. In other words, an associative entity helps in resolving many-to-many relationships, while a relationship with attribute adds details about the connections between entities.
When do you have to use an intersection entity in database?
An intersection entity is used in a database when there is a many-to-many relationship between two entities. It serves as a bridge table to resolve the many-to-many relationship by breaking it into two one-to-many relationships. Each record in the intersection entity represents a combination of records from the two related entities.
Are the data elements that describe an entity.?
Yes, data elements are the smallest units of data that describe an entity in a database. They represent specific attributes or properties of the entity and are used to store and manipulate information about that entity.
Which one of the following diagrams is the most helpful in designing a relational database in which to store object data?
The Entity-Relationship diagram is the most helpful in designing a relational database to store object data. It visually represents entities, their attributes, and the relationships between them, providing a clear understanding of the database structure and enabling effective planning of tables and relationships.
What is entity relationship diagrame?
An entity relationship diagram (ERD) represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business.
Entity-Relationship Diagrams of Grading system?
An entity-relationship diagram of a grading system can be viewed by visiting this website at http://stackoverflow.com/questions/9486156/er-diagram-for-grading-system. There is information included with the diagram about the grading system.
Entity Relationship diagram for Hotel Reservation System?
An entity relationship diagram for hotel reservation systems is a map of each entity or thing that has a part in the process of hotel reservations. The diagram maps the relationship between each entity of the process.
Is a diamond-shape box in a Entity-Relationship diagram refers to?
relationship.....
ER diagram for a banking system?
entity relationship diagram on banking system?
Draw complete Entity Relationship Diagram for Railway Reservation System. Make assumption wherever necessary?
draw complete entity relationship diagram for railway reservation system
How do you convert an entity relationship diagram to a table?
converting er diagram to table in dbms?
How to draw entity relationship diagram?
To draw a relationship diagram, start by placing relationship at the center of the paper. Connect entities to the relationship, and branch out with the different attributes.
What isn the Er diagram of library management?
i need a entity relationship diagram of a small library
Entity relationship diagram for online banking?
An entity-relationship diagram for online banking includes the process of online banking and the relationship between each step. It is a model that maps out, describes, and defines how components are linked for online banking.
What is entity relationship diagram for travel agency?
er travel agent؟
What is the significance of the diagram?
This will depend on what you mean by ER diagram. This could be an entity relationship diagram that shows how to maximize your business intelligence.
