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The MySQL trigger can be used to automatically terminate an INSERT or UPDATE operation if specific conditions are not met. This is achieved by adding logic to the trigger to detect incorrect data or violations of a rule. If the condition is satisfied, the SIGNAL statement is used to show a customized error message and terminate the procedure. Thus, it ensures that the database has valid, clean, and consistent data. For instance, if a value is being updated or inserted in the column beyond the allowed range, the trigger can stop the action and give a customized error message. ... Read More
DELIMITER in MySQL Triggers In MySQL, a DELIMITER command changes the delimiter from its default value of semicolon (;) to another string like //. This is really useful when creating stored procedures or triggers that contain multiple SQL statements, which may also include semicolons. Why do we Change the Delimiter in MySQL When you declare a trigger, you have to write a few SQL statements that may also involve control flow statements like IF conditions, which include semicolons. Unless you change the delimiter, MySQL will consider the first semicolon to be the end of the declaration of the ... Read More
MySQL stores ENUM values internally as integer keys (index numbers) to reference ENUM members. The main reason for not storing the integer values in the ENUM column is that it is very obvious that MySQL ends up referencing the index instead of the value and vice-versa. These indexes begin at 1, not 0, and map to the order of the values defined during table creation. If a number is inserted directly into an ENUM column, MySQL interprets it as the corresponding index, leading to unexpected behavior. Example Let us create a table named Enmtest ... Read More
Introduction When building a Laravel application, managing routes efficiently is crucial. Laravel provides various methods to define routes, and two commonly used approaches for handling resourceful controllers are Route::resource and Route::controller. While both help manage routes in a structured way, they have key differences in how they define and handle requests.In this article, we will explore the differences between Route::resource and Route::controller with an easy-to-understand table and examples. Key Differences Feature ... Read More
To create a fixed footer with CSS, we will use CSS position property. A fixed footer means that the footer will remain fixed at the bottom irrespective of the page scrolling. We will be discussing two different approaches to achieve this. In this article, we are having some written content in a box and a footer. Our task is to create a fixed footer with CSS. Approaches to Create a Fixed Footer Here is a list of approaches to create a fixed footer with CSS which we will be discussing in this article with stepwise explanation and complete example codes. ... Read More
Have you heard about the "sputnik" moment in AI? 20 January 2025. This date. Yes, this date is what some people in the AI industry believe as the sputnik moment. Sputnik, as you might know, was the first artificial earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. This launch was significant because it began what we now know as the space race between 2 super powers of the time: the USA and the Soviet Union. Similarly, on 20 Jan. 2025, a Chinese artificial ... Read More
We use PHP if statement with && (AND) operator to check the two conditions. If both the conditions are true AND (&&) operator return true otherwise return false. In PHP, we have an "and" keyword similar to the "&&" (AND) operator, but it has lower precedence than using an && (AND) operator. Therefore, it is best to avoid the "and" keyword for better clarity, and it also sometimes behaves differently in complex expressions. Basic Syntax if (condition1 && condition2) { echo "Both conditions are true!"; } 1) A block of code executes only if ... Read More
Any e-commerce website must include shopping cart plugins in order to facilitate effortless purchases and improve customer experience. A number of plugins in 2025 are notable for their features, usability, and integration potential. The top ten WordPress shopping cart plugins are listed in this article.1. WordPress Simple Paypal Shopping CartThe WordPress Simple PayPal Shopping Cart is the best option for adding a stable and easy-to-use shopping cart feature to WordPress. It makes it possible to sell goods and services straight from a WordPress website. Using shortcodes, the plugin enables the dynamic development of products.Key featuresThe output produced adjusts without any problems.This ... Read More
Malware is defined as any malicious program designed to harm or take advantage of any network, service, or device. Malicious software refers to any software intended to damage users, networks, or machines. It includes things like zombies and logic bombs. Computer viruses, zombies, logic bombs, worms, Trojan horses, ransomware, spyware, and other harmful applications are all considered malware.What are Zombies?Zombies are infected laptop computers that are under the control of hackers. They could be used for malicious activities including stealing information, sending unsolicited mail, or even breaking into personal computer systems. Zombies are a serious threat to individuals, businesses, and society as ... Read More
HTML5 supports five media elements, that are useful for creating media resources. The different media tags are , , , and . These tags are used to change the development, let us discuss each element in detail with an example − The tag To play videos on your web page, you can use the HTML element. This element provides a standard way to embed videos in a webpage. The simple code to embed a video is as follows − Your browser does not support the ... Read More