Source-derived document; reported behaviour, inference and evidence gaps are identified in the text.
Return to: C06 — Conceptual Information Model — topic detail
System catalog attributes
In this document
Data: System catalog attributes
syscolatt.unl contains pipe-delimited table and column records with numeric attributes, flags, and optional conditions. Customer city is shown with numeric attributes 1 and 0 followed by four n flags. Orders includes order number, order date, purchase-order number, and shipping instructions with numeric attributes including 2, 3, 4, and 12. Items includes item number, order number, stock number, manufacturer code, quantity, and total price, with first numeric attributes 5 through 10 and an additional total-price record with attribute 14. E0009
The item total-price records include conditional entries: one has second numeric attribute 5 with condition >=500, while another has second numeric attribute 4 with condition <500. Stock description and unit price have first numeric attributes 11 and 13 and second numeric attribute 4. These catalog labels describe fields and conditions; they do not, by themselves, establish application state transitions. E0009
Harten documentation of the Informix 4GL and Java source repository, from the retained 17 October 2026 export. The exact upstream revision analysed is not established. Source findings do not establish runtime behaviour or equivalence between the implementations.
Evidence identifiers are retained for traceability. The underlying analysis records are not included in this public edition; credential values are redacted. About this case study.