A message definition in the RAP Messages model represents a RAP data stream template.
Each message definition corresponds to an RDS template XML file in the application, and a table in the Market Data diagram of the RAPCache and RAPStore physical data models.
The sample RAP Messages model contains a message definition for each market data table. You can customize any message definition, or create a new one.
To create a new message in the RAP Messages model, you can either:
- Create the message in PowerDesigner, and then generate a RAP template file from it, or,
- Import a message template that is defined in a RAP template file.
Each message definition contains:
-
identifiers –
associate the message with columns that are keys in the associated table.
-
attributes –
associate the message with a destination column name in the RAPCache and RAPStore, a RAP datatype with length and precision where appropriate, lookup table and column information for columns that are foreign keys, and descriptive notes.