Introduction > Overview > Using QAD CSS with QAD EA

Using QAD CSS with QAD EA
This release of QAD CSS fully supports QAD EA 2008 and higher; it cannot be used with earlier versions of QAD Enterprise Applications or MFG/PRO.
Each domain in a QAD EA database represents a single business operation with distinct operational requirements and settings. While a QAD EA database can have any number of domains, you may want to place orders through QAD CSS that affect only a subset of these domains.
CSS uses the concept of data sources to accommodate the presence of multiple domains in the QAD EA database. Ensure that the data sources (domains) you want to use in your implementation are defined in Data Source Maintenance before other records that are domain-specific can be defined.
All functions that relate to items and customers in QAD CSS require that you specify the associated data source (domain). It includes the functions in the following list.
Note: Users in a QAD EA database are not related to a specific domain. However, in QAD CSS, they are always associated with a customer and customer records are domain-specific, Therefore, in QAD CSS user records are also domain-specific.
Each user sees a catalog of items within the context of the domain associated with the customer they specify at login. If a user is associated with only one customer, this association occurs automatically.