Useful tips for everyday
What is a CDN in tech? CDN Definition. A CDN (Content Delivery Network) is a highly-distributed platform of servers that helps minimize delays in loading…
How is a primary key defined in PostgreSQL? When you add a primary key to a table, PostgreSQL creates a unique B-tree index on the…
What is multi-tier architecture and how it is different from three-tier architecture? Typical tiers in a three-tier architecture are data management, business and client tier.…
What are model invariants? An invariant is any condition on the objects of a conceptual model, their attribute values and links, which must hold for…
Is Observer pattern thread-safe? Functionally this works well and is thread-safe. However, there is one issue with this code which can become a source for…
Which tool you will implement for automation of regression testing? Katalon Studio. Katalon Studio is an end-to-end automation solution that supports functional and regression testing,…
How do I make my cursor better? To change how the mouse pointer looks Open Mouse Properties by clicking the Start button. , and then…
Can you solder to a coin battery? Some lithium coin batteries are designed to handle the reflow soldering process. The ML-R and NBL-R batteries can…
How do you set the screen lock? Set or change a screen lock Open your phone’s Settings app. Tap Security. If you don’t find “Security,”…
What is custom controller in Salesforce? Custom controllers contain custom logic and data manipulation that can be used by a Visualforce page. Controllers typically retrieve…