870-MODIFY-PREV-<Index>
Name
870-MODIFY-PREV-<Index>
Description
Once you have defined a position in the file with a successful 850-MODIFY-NLT-<Index> , use 870-MODIFY-PREV-<Index> to process the record previous to the current position. This routine reads the record preceding the current record for this index and prepares it for updating by 820-STORE-<FileName> .
Using the API in a Program
You must precede 870-MODIFY-PREV-<Index> with 850-MODIFY-NLT-<Index> .
Input Values
| Field | Description |
|---|---|
|
<Index> |
You must specify the database index name that you want to create a record in. |
Record retrieval variables (also known as DB
fields)
|
You must populate the index key fields used to locate the record before using this call. |
Return Values
| Field | Description |
|---|---|
|
<FileName>-SW |
The Modify routines set the <FileName>-SW switch to indicate the outcome of the read. This routine sets the logical value <FileName>-NOTFOUND or <FileName>-FOUND based on the outcome of the read process. |