Database - functionality for front end application
melcox at hotmail.com
Sun Nov 16 00:43:43 CST 2003
I am evaluating Runtime Revolution, but have been growing increasingly
frustrated in attempting to build the shell for a front end database
Although I have been successful in connecting to a local database via ODBC,
I have run into numerous difficulties implementing certain on-form
The data entry/query form that I am attempting to build accesses information
from two primary tables: People and Business. The schemas of these tables
are as follows:
Pid <unique primary key>
CompanyName < a display only field>
Bid <unique primary key>
Problem One: Posting of results from "lookup" query
Whenever a new row is displayed (via Query, Next or Previous calls), or
whenever an entry or modification is made to the form's Affiliation field, I
wish to automatically populate the form's (display only) CompanyName field
with the results of the following SQL query:
select Org_Name from Business where Bid = "<value of the form's currently
displayed affiliation field>"
How can this best be accomplished in Revolution?
[Note: I do not understand the process by which the currently value of a
field is captured and used as a variable within a SQL query].
Problem Two: Placing the current time into a field
Just prior to an insert or update of any row, I wish to populate the form's
Last_update field with a datetime value reflecting the current date and time
(ie. "2003-11-14 13:17:39.250").
How can this best be implemented?
Problem Three: Forcing All Caps
To insure data integrity, my application design requires entry of data into
the "Pid" field in UPPER CASE format.
While I have been successful in limiting the length of the data entered in
this field to ten (10) characters or less, my attempts to force
CAPITALIZATION have to date failed. The following script is currently
applied to the field:
on keyDown theKey
if the length of me >= 10 then beep
else pass keyDown
Any assistance in these areas is most sincerely appreciated.
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