Using the Schema Editor - 7.3

Talend Open Studio User Guide

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The Schema Editor details all fields of the selected table. With the schema type of the table set to Built-In, you can modify the schema of the table.

Use the tool bar below the schema table, to add, move or remove columns from the schema.

You can also load a schema from the repository or export it into a file.




Column name as defined on the Map Editor schemas and on the Input or Output component schemas.


The Key shows if the expression key data should be used to retrieve data through the Join link. If unchecked, the Join relation is disabled.


Type of data: String, Integer, Date, etc.

Note: This column should always be defined in a Java version.


-1 shows that no length value has been defined in the schema.


Defines the number of digits to the right of the decimal point.


Clear this check box if the field value should not be null.


Shows any default value that may be defined for this field.


Free text field. Enter any useful comment.

Note: Input metadata and output metadata are independent from each other. You can, for instance, change the label of a column on the output side without the column label of the input schema being changed.

However, any change made to the metadata are immediately reflected in the corresponding schema on the tMap relevant (Input or Output) area, but also on the schema defined for the component itself on the design workspace.

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