Blog : 109

What is the difference between "Primary Key" and "Unique Key" in SQL?

Sep 15, 2017 | By Webtraffic Exchange | SQL , Databases | 0 Comments

I've had a chance to with a Postgres database and came across a table with two primary keys. This intrigues me to look up a definition of primary and unique key. I always thought there would only be one primary key in a table, and ...]

Malware detected on website

Aug 15, 2017 | By Webtraffic Exchange | Cybersecurity | 0 Comments

One of the servers we manage has been compromised, and hosting malware according to Kaspersky Anti-Virus software. The site uses a number of open-source applications such as WordPress, Gnuboard, and phpLinkDirectory. We initially t...]

Zend Framework without MVC

Jul 15, 2017 | By Webtraffic Exchange | Framework | 0 Comments

The reasoning for using a framework such as Zend Framework (ZF for short) is to speed up the development process, make the application extensible, and make use of the design patterns such as MVC. I think MVC is great, it separates ...]

Perl string quotation operators (q, qq, qr and qx)

Jun 15, 2017 | By Webtraffic Exchange | Programming | 0 Comments

In scripting programming languages such as Perl, PHP, and Python use string quotation extensively. To include a single or double quote inside the string quotation, you'll have to escape the character with a backslash. Perl string q...]

How to test if a form is submitted in PHP?

May 15, 2017 | By Webtraffic Exchange | Programming | 0 Comments

We live in a very busy world, and sometimes we try to get things done quick-and-dirty. One of the most popular examples is to create a PHP script that renders a view and also handles form submission (action). So, what is the best w...]

How to backup a directory over network via tar and ssh?

May 01, 2017 | By Webtraffic Exchange | Linux | 0 Comments

If you wish to make a backup of a file system between two Unix machines, you may use scp command.

Multiple Constructors in PHP

Apr 15, 2017 | By Webtraffic Exchange | Programming | 0 Comments

In most object-oriented programming languages such as Java, C++, and C#, you can define multiple constructors each having different signatures. The class calls the correct constructor based on the number of parameters, and data typ...]

How do I find a dual DVI-D (dual link) graphics card for 2560x1440 resolution?

Mar 26, 2017 | By Webtraffic Exchange | Operating Systems | 0 Comments

With high-end LCD and LED monitors becoming affordable, I've opted to upgrade my current 21" monitors with a larger 27" capable of displaying 2560 x 1440 resolution. I have a Dell Optiplex 3010 computer which has 1 x VGA and 1 x HD...]

Salesforce Reports and Dashboard

Mar 21, 2017 | By Webtraffic Exchange | Salesforce | 0 Comments

Salesforce reports and dashboards provide insight into the sales data stored in your Salesforce organization.

Add Opportunity Contact Roles on Opportunity Update

Mar 19, 2017 | By Webtraffic Exchange | Salesforce | 0 Comments

We're sending an email campaign through Pardot excluding customers who placed an order with us or prospects whom we provided Customer Quotation (SCM Module by Financial Force) within the past 30 days. To exclude this list, we must ...]