This page is for data modellers and application designers. It explains stream attribute data types.

Overview

All attributes have a data type. When loading data from a source, such as a file or database, PhixFlow applies the data type from the source. If there is no data type specified, PhixFlow applies the default type of string.

You can change the type of an attribute before the data has been loaded into the tablestream.

Once the table stream contains stream-items (records), you may be able to change the attribute's data type, depending on the database on which PhixFlow runs. PhixFlow reports an error if you are not permitted to change the data type. In this case you can rollback all record-sets so that the table stream no longer contains recordsstream items; see Rollback.

String

Apply a string type to sequences of characters, such as letters, numerals, symbols and punctuation marks. By default string attribute types have a default length of 50. Specify a different string length in Basic Settings → Length.

Anchor
Bigstring Bigstring

Bigstring

...

The PhixFlow administrator can configure the length of a bigstring using System Configuration → System Tuning → Maximum Bigstring Size.

Integer

Apply an integer type to whole numbers (not a fractions or decimals) that can be positive, negative, or zero. By default integers have a precision of 10 digits. Specify a different integer length in the Basic Settings → Precision.

 If you store a number with decimal places as an integer it will be truncated.

...