Greenplum utilizes a “parallel-everywhere” approach to loading, in which data flows from one or more source systems to every node of the database without any sequential choke points. This approach differs from traditional “bulk loading” technologies—used by most mainstream database and MPP appliance vendors—which push data from a single source, often over a single channel or a small number of parallel channels, and result in fundamental bottlenecks and ever- increasing load times. Greenplum’s approach also avoids the need for a “loader” tier of servers, as required by some other MPP database vendors, which can add significant complexity and cost while.
