A stream is a continually updating data object. It can have a number of sources, including a log file, a sensor, a network feed, a message bus, another database, and so on. A stream is like a table, but one that continually updates. The number of records in a stream can be infinite, as with a log file that is continually read as new data is logged.
A stream is a schema object that is a relation but which does not store data like as a finite relation (such as a table in a database). Instead, a stream implements a “publish-subscribe” protocol. It can be written to by multiple writers and read from by multiple readers.
Streams must be present in s-Server before you can add them as a StreamLab source.
To add an s-Server stream a StreamLab source:
By default, StreamLab uses the project schema for the new source. You can also select a schema from the pulldown menu on the left.
Select a stream or streaming view from the pulldown menu on the right.
Test the source by clicking the - Sample 5 Rows from Source button*.
Click the Go Up arrow to exit the source.
To parse the newly added source, - add a guide* using the newly added Line source.