Can someone create an ERD with business rules, entities, etc explained below for a company called Dry Cleaning Business Rules : Each business rule must
Can someone create an ERD with business rules, entities, etc explained below for a company called "Dry Cleaning"
Business Rules:
Each business rule must describe a relationship in both directions
Each entity and each relationship used in the database must be described in this section
Each entity and each relationship described in this section must be presented on the ERD
Entities that includes:
Entitys name
Entitys description
List of attributes
Data type of each attribute (numeric, text, or date)
Sample data for each attribute
Constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, NULL where applicable)
Each entity must be described in the section. You must have a minimum of 4 entities. The total number of entities recommended is 4-5.
Relationships that includes:
A copy of a specific business rule from the Business Rules section for each relationship described here.
Relationships type: 1:1, 1:M, M:N. Use business rules to justify your decision.
Relationship strength: strong or weak. Use business rules to justify your decision.
Optionality for both sides of each relationship: mandatory or optional. Use business rules to justify your decision.
Each relationship must be described in the section. Each M:N relationship must be resolved and described.
Crow's Foot Entity Relationship Diagram:
ERD must be consistent with business rules and descriptions
ERD must show all entities and their attributes, relationships, connectivities, constraints, optionality and cardinalities
Tables and attributes names must follow naming conventions used in class
Each relationship must be properly labeled
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