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ER diagram

ER diagram

by Md. Khadamul Islam -
Number of replies: 3

How ER diagram is useful in designing database?

In reply to Md. Khadamul Islam

Re: ER diagram

by Renesa Bente Maula -
ER diagram is useful to avoid ruining the data in a production database. By drawing ER diagrams to visualize database design ideas, you have a chance to identify the mistakes and design flaws, and to make corrections before executing the changes in the database.
In reply to Md. Khadamul Islam

Re: ER diagram

by Mehedi Hasan Shaon -
Entity-Relationship Model (ER Modeling) is a graphical approach to database design. It is a high-level data model that defines data elements and their relationship for a specified software system. An ER model is used to represent real-world objects.To avoid ruining the data in a production database, it is important to plan out the changes carefully. ERD is a tool that helps. By drawing ER diagrams to visualize database design ideas, you have a chance to identify the mistakes and design flaws, and to make corrections before executing the changes in the database
In reply to Md. Khadamul Islam

Re: ER diagram

by Sweety Islam -

An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).