Tutorial on making Entity Relationship Diagram (ERD) using enterprise architect software

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nodemisteriy.blogspot.com - there are several types of system modeling languages ​​(UML) that are used by an application program analyst in designing an application, starting with business processes, workflows, actors using the system, database administrators, database relations and many others. In designing a database, Erd is needed in its design, Erd functions to explain the database structure from tables, fields, attributes to relations in a system. by using enterprise architect software, the process of making erd becomes easier and faster when designed, in addition to enterprise acrhitect software has a user friendly design and easy to understand, the features in this software are also very complete in their needs. erd has several cardinalities such as one to one, one to many, and many to many, which means that if one to one is a relationship from one entity to another from 1 object, while one to many means that one object/entity can access many other entities, while many to many can mean many entities. that are interconnected with more than 1 other entity. and below we will discuss how to create an entity relationship diagram using enterprise architect software:

ERD Functions:

- Makes it easier for programmers and database administrators to design data on the system

- Make it easier for a program analyst to analyze system requirements

- Facilitate the work of a programmer in designing databases

- Make it easier for a programmer to design relationships in the database

- Provide an overview of the entities and documents needed in the database with erd

The symbols on the ERD

- Entity / entity

- Attributes

- Relationships and relationships

- Lines and links

- Cardinality

1. First steps

The first step in creating an ERD (entity relationship diagram) is to open a new project document, as in the previous step selecting the file menu and selecting new project to open a new document page, after that name the eap document with the name erd practice. after being renamed, click save and the practice erd project has been saved successfully. save the eap erd document in a folder that is easy to view / save, it is recommended to save the document outside the C / Local disk C directory because to reduce the risk of data being lost when reinstalled.

2. New diagram step

The next step is to select the database menu in the technology menu, after selecting the database menu on the left, scroll down at the very bottom there is an entity relationship diagram option, then check and select erd, then click ok so that the erd document is successfully created.

3. ERD design steps

After selecting erd in the diagram option, a new erd document page will appear, in the left menu select and click entity relationship diagram, and on the right there are several erd symbols, each of which has its own meaning and function, and on the right there are page to create an erd design. The design steps are almost the same in making use cases, activities, and others. that is by clicking on the symbol that is needed and then dragging it to the erd document page.

And that's the tutorial on making ERD diagrams using enterprise architect software.

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