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E-R Modeling Part 1: Concepts and Basic Elements Goals for E-R module: Discuss semantic modeling as part of systems analysis and design Introduce basic E-R concepts Illustrate E-R modeling by discussing

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How to fill out e-r modeling part 1

How to fill out e-r modeling part 1:

01

Start by understanding the basics of entity-relationship (e-r) modeling. Familiarize yourself with the different elements of this modeling technique, such as entities, attributes, relationships, and cardinality.

02

Identify the main entities involved in your system or problem domain. These entities are the objects or concepts that you want to represent in your e-r model.

03

Define the attributes for each entity. Attributes are the properties or characteristics of an entity. Determine the appropriate attributes that describe each entity and define their data types.

04

Establish the relationships between entities. Analyze the relationships between different entities and determine their type, such as one-to-one, one-to-many, or many-to-many. Decide which entities are related and how they are connected.

05

Assign cardinality to the relationships. Cardinality specifies the number of occurrences or instances of one entity that are related to the instances of another entity. Determine the minimum and maximum cardinality for each relationship.

06

Draw the e-r diagram. Use a tool or software to create a visual representation of your e-r model. Place the entities, attributes, and relationships on the diagram and connect them accordingly.

07

Validate and refine your e-r model. Review your e-r diagram for any inconsistencies or errors. Make necessary adjustments to ensure that your model accurately represents the system or problem domain.

08

Document your e-r model. Create documentation that explains the entities, attributes, relationships, and cardinality in your e-r model. This documentation serves as a reference for future development or analysis.

Who needs e-r modeling part 1:

01

Software developers or system analysts who are designing or developing database systems.

02

Database administrators responsible for maintaining and managing databases.

03

Students or professionals studying or working in the field of database design and management.

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