Login
Templates, Tools and Utilities
for Clarion Developers
Templates, Tools and Utilities
|
||
|
|
|
Icetips Article
Back to article list
Search Articles
Add Comment
Printer friendly
Direct link
Par2: Pervasive compliant DDFs 2004-12-17 -- Al Henry I'm not familiar with CLA2DDF but I had a similar problem. If your files do
not pass the Pervasive consistency tests, then your indexes will be ignored
and accessing your files will be done sequentially which can be painfully
slow for larger files.
Here's a process I used to get my DDF's and files in sync. Use the PCC to
create a new table (and new DDF's) and select the 'use advanced settings'
checkbox. Specify the location of the existing btrieve file you want the
matching DDF to access. Set up the columns and indexes (this may take many
iterations and a lot of trial and error but you should be able to make a
matching structure). Next save the SQL script generated to create the file.
Modify the SQL script if necessary and run the SQL to create the files and
indexes. Copy the existing btrieve file into the new SQL file using the
Pervasive copy function. Run the consistency test with the new DDF and the
new file. You may have to modify the SQL script to handle any errors
generated by the consistency test and do the process over (you may need to
specify NOT NULL for each field or CASE for strings). Eventually you should
be able to get a clean run from the consistency test.
Try it out and let me know your results or send me an email if you need more
clarification.
Today is November 21, 2024, 8:38 am This article has been viewed 35224 times.
|
|