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Introduction to the CAST Function in Cassandra Cassandra is a highly scalable and distributed NoSQL database that is well-suited for storing and managing large amounts of data. One of the key features of Cassandra is its powerful query language, CQL (Cassandra Query Language), which allows you to easily retrieve and manipulate data stored in Cassandra. One useful function in CQL is the CAST function, which allows you to change the data type of a column or expression. This function is particularly useful when you need to perform calculations or comparisons on data that have different data types. In this article, ... Read More
Cassandra: An Introduction to the Distributed NoSQL Database In today's fast-paced digital world, the volume and velocity of data generated is increasing at an unprecedented rate. To handle this big data, traditional relational databases such as MySQL and PostgreSQL are no longer sufficient. This is where NoSQL databases come into the picture, and one of the most popular NoSQL databases is Apache Cassandra. In this article, we will introduce you to the basics of Cassandra, a highly-scalable, distributed NoSQL database that is known for its ability to handle large amounts of data across multiple commodity servers. We will cover the ... Read More
Cascadeless in DBMS: Understanding and Implementing the Concept A database management system (DBMS) is a software that is used to store, organize, and manage data in a structured manner. One of the key concepts in DBMS is cascading, which refers to the automatic propagation of changes made to the data in one table to the related data in other tables. While cascading can be convenient in many cases, it can also lead to unintended consequences, such as data loss. To mitigate this, many DBMSs allow for the use of cascadeless operations, which prevent cascading from taking place. In this article, ... Read More
In the field of database management systems (DBMS), a candidate key is a set of one or more columns that can uniquely identify a row within a table. A candidate key is also known as a "unique identifier" or "primary key." In this article, we will discuss the importance of candidate keys in DBMS and how they are used to maintain the integrity and consistency of a database. What is a Candidate Key? A candidate key is a set of one or more columns that can be used to uniquely identify a row within a table. In other words, no ... Read More
Introduction In a database management system (DBMS), the scheduler is responsible for managing the execution of concurrent transactions. The scheduler uses a schedule, which is a sequence of actions that the DBMS must execute, to ensure that the system remains in a consistent state and that concurrent transactions do not interfere with each other. There are two types of schedules: serial schedules and non-serial schedules. In this article, we will discuss the calculation of both types of schedules in a DBMS. Serial Schedules A serial schedule is a schedule in which all transactions are executed one after another, without any ... Read More
In this article, we will learn how to create a user interface using python. What is GUI? The term "Graphical User Interface" (or "GUI") refers to a set of visual elements that may be interacted with in computer software to display informational and interactive items. In response to human input, objects may change appearance characteristics like as color, size, and visibility. Graphical components like icons, cursors, and buttons can be enhanced with audio or visual effects like transparency to create a graphical user interface (GUI). If you want more people to use your platform, you need to make sure it ... Read More
This article will teach us how to create some fascinating things in Python to make our work more interesting. Trading Bot While the economy, stock market, and cryptocurrencies are all suffering, many people are still profiting. Even though you shouldn't put all your money into a trading bot unless you know what you're doing, it's an interesting project to work on and learn from. AI Sports Betting Software Although the goal is to predict an outcome of events (much like the trading bot), the approach you choose to solve this challenge may be very different. As opposed to a trading ... Read More
Introduction On modern multi-core CPUs, it is often useful to know the CPU usage of individual cores for a particular process. This can be helpful for identifying bottlenecks in the system, or for understanding the workload distribution across CPU cores. In this article, we will see how to measure separate CPU core usage for a process on Linux using various command line tools. Measure CPU Core Usage using top Command The top command is a commonly used tool for monitoring system resources, including CPU usage. By default, top displays the overall CPU usage for all cores, but it also provides ... Read More
Introduction In Linux, a disk partition is a logical division of a hard disk drive (HDD) or solid-state drive (SSD) that is used to manage data in a more organized manner. Partitions allow you to separate data by function, such as separating system files from user files, or to set up multiple operating systems on a single physical disk. There are several tools available for creating and managing disk partitions in Linux, including fdisk, parted, and gparted. In this article, we will focus on using fdisk and parted as they are widely available on most Linux distributions. Creating a Partition ... Read More
Introduction Bash is a Unix shell and command language that is commonly used on Linux systems. It allows users to perform a variety of tasks, including deleting files. In this article, we will look at how to delete multiple files at once in Bash on a Linux system. We will cover the basic syntax for deleting multiple files, as well as some advanced techniques for deleting specific types of files or forcing the deletion of write-protected files. Using rm Command in Linux The rm command is used to delete files in Bash. To delete a single file, you can use ... Read More