Editing Assumptions and Dependencies (section)

== 5. Constraints ==

{|
!width="20%"| ID
!width="34%"| Constraint
!width="22%"| Source
!width="22%"| Impact
|-
| C-01
| Target runtime is Linux only. <code>SPECIAL-NAMES. CONSOLE IS scherm</code> is platform-specific.
| GnuCOBOL platform support
| Cannot run on Windows or mainframe without porting
|-
| C-02
| Database must be PostgreSQL. The connection string prefix <code>pgsql://</code> and GixSQL dialect are PostgreSQL-specific.
| GixSQL driver
| Not portable to DB2, Oracle, or SQL Server without code changes
|-
| C-03
| Upper generation limit is hard-coded at 999,999,999.
| Source code <code>primesgen.cbl</code> line 91
| Cannot be changed without recompilation
|-
| C-04
| Database credentials are hard-coded in <code>primes.cbl</code> WORKING-STORAGE.
| Source code; technical debt
| Credential rotation requires recompilation and redeployment
|-
| C-05
| Print record width is fixed at 132 characters.
| <code>primesui.cbl</code> FD and table layout
| Report format cannot be changed without recompiling <code>primesui</code>
|-
| C-06
| The two operational modes (generate / report) are mutually exclusive per invocation.
| <code>primesmain.cbl</code> EVALUATE structure
| Cannot generate and report in the same run
|-
| C-07
| GnuCOBOL 4.0-early-dev was used; behaviour may differ from stable GnuCOBOL 3.x.
| Compiler listing header
| Compatibility with stable GnuCOBOL releases unverified
|}


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