Data feed structure
A data feed is a table that contains processed data. The data in the data feed table is calculated using one or more combined data streams. A data stream reads data from a data source, transforms, or calculates data using various operators. A data stream contains at least one data source or transformation operator, or combines multiple operators into a structural or logical unit.
A stream has a name and a type. The type of the stream depends on the calculation result of the last operator listed in that stream. If the last operator is a table operator that produces tabular data, the stream is considered a table stream. If the last operator is a single value operator that returns a single value or a single value list, the stream is considered a single value stream. Single values, such as user inputs or constants, provide data for individual operators.
Different colors are used to indicate the type of operator and stream.
Operator and stream connections
Streams and operators can be connected to exchange data. There are two types of connections: connections between streams and connections between streams and operators. Connections between the in and out connectors of two streams are visualized with solid lines. A stream can also be connected to an operator in another stream. This type of connection is shown as dotted line.
Example
