In the last lesson, you created properties on Person nodes by automatically mapping them from the source CSV file.
Data Importer allows you to select specific properties to import and assign custom names and data types - this is useful when the source data is not in the format you want in the graph.
Select properties to import
You can add custom properties using the + button in the Properties panel.
You must define:
-
The name of the property
-
The data type of the property
-
The column from the source file
You can import as few or as many properties as you need, providing you import at least one property you set as the unique identifier.
Types
Data importer supports the import of data with the following data types:
| Data type | Description |
|---|---|
|
Text data of variable length |
|
Whole numbers |
|
Decimal numbers |
|
True or False values |
|
Date and time values |
Type mismatch
Data Importer won’t set a node property if it cannot convert the source data to the specified data type.
However, the import will continue and be successful, but that node won’t have that specific property.
You can import multiple properties of different types from the same column in the source file.
For example, if your source data contained a field of string and integer values, you could import both as separate properties.
Check Your Understanding
Number of properties
How many properties must you create for each node when using Data Importer?
-
❏ As many or as few as you want
-
✓ At least one for the unique identifier
-
❏ As many as you need to import all the columns in your source file
-
❏ None
Hint
Every node must have a unique identifier.
Solution
You can import as few or as many properties as you need, providing you import at least one property you set as the unique identifier.
Summary
In this lesson, you learned about the options for importing properties and setting their data types.
In the next challenge, you will use what you have learned to import Movie nodes.