Draw ERD for an Online Examination Management System for a University.(IGNOU ASSIGNMENT 2020)

Draw ERD for an Online Examination Management System for a University. Make necessary assumptions.

Bachelor of Computer Applications




IGNOU MCS 014 Solved Assignment 2020- 2021

Course Code: MCS-014 
Course Title: Systems Analysis and Design 
Assignment Number: BCA(3)/014/Assignment/2020-21 

ER Diagram

Notations for the components of ERD:

Entities: An entity is something about which the business needs to store data. An entity is a class of persons, places, objects, events, or concepts about which we need to capture and store data. An entity instance is a single occurrence of an

Attribute: An attribute is a descriptive property or characteristic of an entity. Synonyms include element, property, and field. A compound attribute is one that actually consists of other attributes. It is also known as a composite attribute. An attribute “Address” is an example of the compound attribute as shown in the following illustration

Relationships: A relationship is a natural business association that exists between one or more entities. The relationship may represent an event that links the entities.

Cardinality: defines the minimum and maximum number of occurrences of one entity that may be related to a single occurrence of the other entity. Because all relationships are bidirectional, cardinality must be defined in both directions for every relationship.

Draw ERD for Online Examination System. Make necessary assumptions.

Figure:- ERD

Figure:- ERD

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