Try OpenEdge Now
skip to main content
Managing ABL Applications
R-code Features and Functions : Database CRCs and time stamps : CRC calculation
 

CRC calculation

The following table lists the metaschema fields that are involved in each CRC calculation.
Table 32. Metaschema fields in CRC calculation
Metaschema table
_File
_Field
_Index
_Index–Field
_File-Name
_DB-lang
_Field-Name
_Data-Type
_dtype
_sys-field
_field-rpos
_Decimals
_Order
_Extent
_Fld-stdtype
_Fld-stlen1
_Fld-stoff
_Fld-case
_Index-Name
_Unique
_num-comp
(_Field-Name)2
_Ascending
_Abbreviate
_Unsorted
1 The _Fld-stlen is not involved in the CRC calculation for BLOB and CLOB fields.

2 The _Field–Name for index fields is referenced in the _Field table using _Field–recid in _Index–Field.

* CRC calculation for tables