Data Model
You can use the cmdlet to work with all of the tables in your account. The cmdlet connects to Salesforce and gets the list of tables and the metadata for the tables by calling the appropriate web services. Any changes you make to your Salesforce account, such as adding a new table, adding new columns, or changing the data type of a column, are immediately reflected when you connect using the cmdlet.
Tables
The cmdlet models the Salesforce API as relational Tables. The table definitions are dynamically retrieved; here, we show the sample table definitions that are included in the Salesforce.com development environment.
In addition to the tables, the cmdlet also offers stored procedures and views, enabling you to work with other aspects of the Salesforce API, like bulk jobs, custom reports, and so on.
Stored Procedures
Stored Procedures are function-like interfaces to Salesforce. They can be used to search, update, and modify information in Salesforce.
Views
Views offer additional metadata information from Salesforce.
Working with Polymorphic Fields
Polymorphic Fields explains how to work with related objects as different types of objects.