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Articles on Trending Technologies
Technical articles with clear explanations and examples
Select records with ACTIVE status in MySQL set with ENUM
MySQL's ENUM data type is used to define a specific set of values in a column making it easier to manage and maintain data consistency. GROUP BY and WHERE() function In MySQL WHERE clause is used to filter the rows based on a condition before grouping them. The GROUP BY clause groups rows with identical values in specified columns, and can be used with functions like SUM, COUNT, and AVG. Together they enable focused data analysis by filtering and grouping efficiently. Syntax Following is the syntax to filter the data on certain conditions and to eliminate duplicate records. SELECT column1, ...
Read MoreMySQL query to select ENUM(\'M\', \'F\') as \'Male\' or \'Female\'?
In MySQL, the ENUM data type is used to limit column values to a specified set of options which is useful for categories like colors, status, and gender. Sometimes, it is helpful to display these ENUM values as more descriptive like converting 'P' to "pass" and 'F' to "Fail". The IF() function in MySQL makes this easy by allowing conditional logic within SQL queries. The example below will demonstrate how to use the IF() function to convert ENUM values into user-friendly. Example To understand first let us create a table, DemoTable, which contains an ENUM column UserGender to store ...
Read MoreIn which order MySQL will invoke the triggers if we created multiple triggers of same event and action time?
In MySQL, triggers allow automatic execution of specified actions in response to INSERT, UPDATE or DELETE events on a table. Often, multiple triggers may be created for the same event and action time (e.g.; multiple BEFORE INSERT triggers on the same table). By default, MySQL invokes these triggers in the order they have created. However, the FOLLOWS and PRECEDES option allows control over the sequence of execution which can be critical in complex data handling. In this article, we will explore how to set the order of multiple triggers for the same event and action ...
Read MoreHow to show that each MySQL enumeration has an index value?
In MySQL, the ENUM data type enables you to define a column using only a collection of predetermined values. Each value in the ENUM list is assigned a position number known as an index (which begins with 1). These index numbers represent the positions of the values in the list, not the actual data. For example, if the ENUM list is ('Male', 'Female', 'Other'), Male has an index of 1 while Female has an index of 2 and Other will have an index of 3. This further enables MySQL to store and compare the values more effectively, though actual ...
Read MoreJava Program to Find the Volume of Cylinder
A cylinder is a three-dimensional geometric shape with two parallel circular bases connected by a curved surface. The volume of a cylinder can be calculated using a mathematical formula that considers its radius and height. Problem Description In this tutorial, we are going to discuss how to find the volume of a given cylinder in Java using different approaches. Formula for Volume of Cylinder The formula for the volume of a cylinder is as follows: Volume of Cylinder = π × r² × h where: r: The radius of the circular base. h: The height of the cylindrical body. ...
Read MoreHow Apple Watch is Evolving as a Medical Device?
Whilst all wearable technology impacts the user’s health to some degree, the latest version of the Apple Watch is regarded by a growing number of Medical Professionals as the most sophisticated device in this field. This article looks at the capabilities of the current design of Apple Watch and how it can be an effective healthcare accessory. Apple Watch Overview The Apple Watch is a smartwatch product created and sold by Apple Inc., based in Cupertino, California. It has fitness monitoring, health-related features, and wireless connection, and is compatible with the WatchOS software and many other Apple devices and ...
Read MoreDifference between VelocityDB and XAP
Deciding on a database requires an analysis of both performance and scalability along with architectural design and feature sets of available solutions. The database solutions VelocityDB and XAP exist to meet demands of high-performance applications. The following table presents an in-depth assessment of these two databases. Comparison Table: VelocityDB vs. XAP The following table compares and contrasts the important features of VelocityDB and XAP - ...
Read MoreReverse Domain Hijacking
When an unethical trademark holder uses legal or administrative means to illegally steal an online space away from a legitimate owner, this is known as reverse domain hijacking. This is not the same as domain hijacking, where a malicious entity is genuinely offered a domain name. In-depth discussions of reverse domain hijacking concepts and its effects for domain owners and the internet community are covered in this article.What is Reverse Domain Hijacking?When the rightful proprietors of particular domain names are unable to resist, domain reverse hijacking happens. This is accomplished by denying the legitimate owners of domain names through the ...
Read MoreHow to deploy machine learning model using flask
Deploying a Machine Learning Model Using Flask Machine learning (ML) models are powerful tools for solving real-world problems. However, for them to be useful, they need to be deployed so that users can interact with them via a web interface or API. Flask, a lightweight web framework in Python, is a great option for deploying ML models due to its simplicity and flexibility.This guide provides a step-by-step approach to deploying an ML model using Flask. You have trained a machine learning model for a specific task, such as image classification, sentiment analysis, or predictive analytics. Now, you have to make ...
Read MoreDifference between Android 1.0 and Android 4.4
Introduction Android, developed by Google, has undergone significant transformations since its initial release. The first official version, Android 1.0, launched in 2008, laid the foundation for the modern smartphone ecosystem. It introduced basic functionalities like the Android Market (now Google Play), notifications, and core Google apps. However, it lacked many features that are now considered standard in modern smartphones. Fast forward to Android 4.4 (KitKat), released in 2013, and the operating system has evolved dramatically. This version focused on performance improvements, a polished UI, optimized resource usage, and better efficiency on lower-end devices. It also introduced several new features such ...
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