Re: File maintenance app using page-at-a-time subfile and SQL

http://martinvt.com/Subfiles/Paging_SFL/paging_sfl.html
This is a 2.6 million record file.

An effective useful limit for a load-all subfile is about 1500 records. Greater than that becomes frustrating for users as the number of page-downs/page-ups can be in the dozens to get where you want to go. A scroll bar only increases the useful number to about 2500.

For maintaining records in a many-record file, it would seem the ideal way would be to write a separate, callable program that maintains a single record-at-a-time:
FixTargetRecord(TargetRecordKey);
seems to me to be flexible, isolated, and uncomplicated.

That way one can use check box & radio button selection, as in this second example:
http://martinvt.com/Subfiles/Two_Subfiles/two_subfiles.html



On 1/30/2015 12:28 PM, Dan wrote:

After about a 9 year hiatus from interactive app development, I started a
new job this week where I'm back into this.

Was given a project for an existing maintenance app that currently loads a
page at a time, adding to the subfile with each page down action, until it
hits the 9999 limit. Problem is, now we're starting to get transaction
data that exceeds 9999 records.

The new design I suggested is to redefine the subfile using SFLSIZ=SFLPAG,
and each paging action performs editing on the entire page of records, then
updates the table when there are no errors. The current app has a
"position-to" entry, and we need to be able to page both up and down from
that position.

SQL is not mandatory at this point, but I can see a potential future
benefit of being able to select certain records for display/maintenance.

I've searched for example templates, but the few I've found are for inquiry
only and not using SQL. Some websites linked in the archive are now
non-existent. If anyone knows where I can find a decent template, please
let me know.

TIA,
- Dan