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This page is for data modellers or application designers. It explains how to draw an ERD and its properties.

See Understanding ERDs


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Drawing ERDs

Create an ERD

  1. In the repository for your application, right-click on 
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  2. Click 
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    .
  3. In the pop-up, enter its name.
  4. PhixFlow opens a the properties tab on the right, and . Enter the name for your ERD and either press Return or click 
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  5. PhixFlow opens a new ERD canvas on the left. The ERD has a toolbar at the top; see the Toolbar section below for details.
Tip

When you make any changes to the ERD, remember to 

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Open an ERD

To open an existing ERD

  • either, in the repository, right-click on its name and select Display.
  • or, in the properties toolbar, click the .
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     icon.

Create a New Table

  1. Drag the 
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     icon from the toolbar into the diagram.
  2. In the pop-up, enter its name, for example "Customer" and click
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    . PhixFlow opens a new Stream properties tab.
  3. PhixFlow adds a box to represent the table, and opens the properties tab for it.
  4. To add attributes to the table:
    • either, in the properties tab on the right, In the Attributes section, click 
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      .
    • or right-click the table and select Add New Stream Attribute.
  5. PhixFlow opens a Stream Attributes properties tab where you can specify details for the attribute, such as its name, data type and length. 
  6. If this is the unique identifier, tick Primary Key. Remember to include ID or UID in the name.

Add an Existing Stream

  1. In the repository, open the list of tables/streams.
  2. Drag a table/stream from the repository into the diagram. PhixFlow adds the stream with a list of all of its attributes.
  3. If the stream has many attributes, click  to collapse the stream so that it only shows the primary and foreign keys.

Connect Attributes

To connect attributes in different tables/streams, click-drag from one attribute to another. PhixFlow shows the currently selected destination in bold. Release the click to connect to the selected destination.

PhixFlow can only connect primary and foreign keys. This creates a one to many relationship. If you connect standard attributes, PhixFlow automatically sets them to be foreign keys.

Tip

PhixFlow automatically ticks the Primary Key or a Foreign Key boxes in the the Stream Attributes properties.


Properties

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Basic Settings

FieldDescription
NameEnter the name for the ERD. When you press Return or Save a new properties tab, PhixFlow opens an empty diagram in the workspace on the left.