Creating a new data model

To create a new data model

1. Open NoSQL Workbench, and in the navigation pane on the left side, choose the Data modeler icon.

   

2. Choose Create data model.

   

   Create data model has two choices: Make model from scratch and Start from a template.

   

   Make model from scratch

   To make a model from scratch, enter a name, author, and description for the data model. Choose Create when finished.

   

   Start from a template

   Starting from a template lets you choose a sample model to start from. Choose More templates to see more template options. Choose Select for the template that you want to use.

   Enter a data model name, author, and description for the template you selected. You can choose between Schema only and Schema with sample data.

   • Schema only creates an empty data model with the primary key (partition and sort key) and other attributes.

   • Schema with sample data will create a data model complete with sample data for the primary key (partition and sort key) and other attributes.

   When this information is complete, choose Create to create the model.

   

3. With the model created, choose Add table.

   

   For more information about tables, see Working with tables in DynamoDB.

4. Specify the following:

   • Table name – Enter a unique name for the table.

   • Partition key – Enter a partition key name, and specify its type. Optionally, you can also select a more granular data type format for sample data generation.

   • If you want to add a sort key:

     1. Select Add sort key.

     2. Specify the sort key name and its type. Optionally, you can select a more granular data type format for sample data generation.

   Note

   To learn more about primary key design, designing and using partition keys effectively, and using sort keys, see the following:

   • Primary key

   • Best practices for designing and using partition keys effectively in DynamoDB

   • Best practices for using sort keys to organize data in DynamoDB

5. To add other attributes, do the following for each attribute:

   1. Choose Add an attribute.

   2. Specify the attribute name and its type. Optionally, you can select a more granular data type format for sample data generation.

6. Add a facet:

   You can optionally add a facet. A facet is a virtual construct in NoSQL Workbench. It is not a functional construct in DynamoDB itself.

   Note

   Facets in NoSQL Workbench help you visualize an application's different data access patterns for Amazon DynamoDB with only a subset of the data in a table. To learn more about facets, see Viewing data access patterns.

   To add a facet,

   • Select Add facets.

   • Choose Add facet.

     

   • Specify the following:

     • The Facet name.

     • A Partition key alias to help distinguish this facet view.

     • A Sort key alias.

     • Choose the Other attributes that are part of this facet.

   Choose Add facet.

   

   Repeat this step if you want to add more facets.

7. If you want to add a global secondary index, choose Add global secondary index.

   Specify the Global secondary index name, Partition key attribute, and Projection type.

   

   For more information about working with global secondary indexes in DynamoDB, see Global secondary indexes.

8. Save the edits to your table settings..