The black dot represents the beginning of the line and is attached to a table that has a foreign key referencing another table If the relationship between two tables is other than one-to-one, you will see multiple lines that all start at the same one point and all merge at the end point. is a free (and remarkable tool) for generating ER diagrams. The dashed line means that the foreign key column is not a primary key in a referencing table SQLite is a lightweight database management system (DBMS) that can be packaged inside Galaxy. The solid line means that the foreign key column is also a primary key in a referencing table phpMinAdmin) is a full-featured database management tool written in PHP. For traditional or enhanced ER models, generated models or diagrams created from scratch, cloned and. Adminer is available for MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle. In those situations you will just see more than one line. Generic relational database modeling inspection tool. It makes creating databases much faster and really helps reduce errors. SQLEditor replaces typing SQL by hand with dragging, dropping and clicking.
Even for one-to-many and other relationships that imply otherwise. SQLEditor v.1.7.6 Beta 2 A Database design and entity relationship diagram (ERD) tool for Mac OS X. Please note that any line can have only one beginning and one end. SQLite Database Browser is an open source tool that allows you to create, design and edit SQLite database files. Lines representing the relationship between tables can look different depending on the nature of the relationship. This is because the diagrams represent the actual state of databases. You can rearrange the layout, drag-n-drop elements inside a diagram but you cannot save the changes state or delete/add anything.
NOTE: Table and schema diagrams are read-only. ERBuilder Data Modeler allows developers to graphically design databases by using entity relationship diagrams and automatically generates the most popular SQL databases.
To view the ER diagram for a full database schema, double-click the schema name in the Database Navigator or the previous node in the path (usually - Tables): To view the ER diagram for a table or view, double-click the table or view in the Database Navigator and then, in the Database Object Editor, switch to the ER Diagram tab: The ER diagram for a table shows the table itself and its relations with other tables inside the schema. ER diagrams are available for all tables and schemas (databases). You can view a database structure in the standard ERD (Entity Relation Diagram) form.