dcsimg
LinkedIn
Google+
Twitter
RSS Feed
Download our iPhone app
TODAY'S HEADLINES  |   ARTICLE ARCHIVE  |   FORUMS  |   TIP BANK
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.


Tip of the Day
Language: Visual Basic
Expertise: Beginner
Apr 7, 1999

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Record Locking using LockEdits

Question:
I am developing a multiuser application in Visual Basic 4.0 and wish to restrict users from editing Open or Locked records. Having successfully set up user security access and permissions, I thought it would be a simple case of invoking pessimistic locking using the Edit method to prevent other users from accessing the same record. This said, it works, but the Lockedits property allocates a 2K copy to the buffer, which appears to include more than just one record. Is there any way around this, or do I have to live with the fact that other records not currently open are locked and therefore unavailable to other users?

Answer:
The amount of data locked is a function of the database, not VB. Access and SQL Server 6.5 lock data pages, not rows. That's why you are finding other records locked. SQL Server 7.0 implements row locking.

DevX Pro
 
Comment and Contribute

 

 

 

 

 


(Maximum characters: 1200). You have 1200 characters left.

 

 

Sitemap
Thanks for your registration, follow us on our social networks to keep up-to-date