ER diagrams are used to visualize the major entities within the system scope and the inter-relationships between these entities. The entities represent people, objects, concepts, or events as a component of data.
Entities in an ER diagram are represented as a rounded rectangle with the name on top and attributes below. Connecting lines in combination with rectangles, diamonds, and ovals are used to display the correlation of the entities. You can use Gleek on the conceptual level and don’t have to worry about how precise the diagram is.
Gleek uses an informal diagramming language with its own syntax. If your goal is to create a perfect entity-relationship diagram, Gleek might not be for you. If your goal is to quickly visualize your idea, Gleek will help you to quickly generate diagrams during a meeting or when collaborating.