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Articles on Trending Technologies
Technical articles with clear explanations and examples
Difference between Electric Field and Magnetic Field
There is a property of space which is caused by the motion of the electric charge, is known as electromagnetic field. There are two component of an electromagnetic field viz. −Electric fieldMagnetic fieldA stationary electric charge produces only an electric field in the surrounding space. If the electric charge is moving, then it also produces a magnetic field. The electric field and magnetic field occupy different planes relative to the cause of the electromagnetic field, i.e., moving charge.Therefore, one of the major difference between electric field and the magnetic field is that the electric field produces around a static electric ...
Read MoreBulk Reading in Cassandra
Introduction Bulk reading is a common operation when working with Cassandra, a popular NoSQL database known for its scalability and high performance. It allows you to efficiently retrieve large amounts of data from a Cassandra cluster by making use of the database's distributed architecture. In this article, we'll explore the various ways you can perform bulk reading in Cassandra and the considerations you should keep in mind when doing so. What is Cassandra? Before diving into the specifics of bulk reading, let's first take a step back and talk about Cassandra itself. Cassandra is a distributed database management system designed ...
Read MoreBuilding blocks of a Data Model
Introduction A data model is a blueprint that represents the organization of data and the relationships between different data entities. It is an essential component of any software system as it defines how data is stored, accessed, and modified. In this article, we will explore the building blocks of a data model and how they work together to form a cohesive whole. Data Entities The first building block of a data model is data entities, which represent the objects or concepts that are relevant to the system. For example, in an e-commerce system, data entities might include products, customers, orders, ...
Read MoreBuffering of Blocks
What is Buffering of Blocks? In computer science, buffering refers to the temporary storage of data in a buffer, or a small, fixed-sized area in memory, while it is being moved from one place to another. When data is transferred from one location to another, it is often necessary to store it temporarily in a buffer to ensure that the transfer is smooth and efficient. There are two main types of buffering: input buffering and output buffering. Input buffering refers to the temporary storage of data that is being received from an external source, such as a file on a ...
Read MoreBlob conversion function in Cassandra
Introduction If you are working with Cassandra, you may have come across the need to convert blobs to other data types or vice versa. Cassandra, being a distributed NoSQL database, stores data in the form of blobs (binary large objects) to increase flexibility and scalability. However, this can cause issues when you need to query or manipulate the data stored as blobs. That's where the blob conversion function comes in handy. In Cassandra, you can use the "blobAs*" function to convert blobs to various data types, such as integers, floats, timestamps, and more. This function allows you to easily access ...
Read MoreBitmap Indexing in DBMS
Bitmap indexing in DBMS is a type of indexing technique that is used to improve the performance of database systems. It works by creating a bitmap for each distinct value in a database column, with each bit in the bitmap representing a row in the database table. The bitmap index can then be used to quickly identify which rows in the table match a given search criteria, making it an efficient way to filter and retrieve data from large tables. In this article, we will delve into the concept of bitmap indexing and how it works, the advantages and disadvantages ...
Read MoreBinary Relational Operations: JOIN and DIVISION
In database management systems, the ability to connect and retrieve data from multiple tables is crucial for effective data organization and manipulation. The JOIN and DIVISION operations are two binary relational operations that allow users to combine or divide data from multiple tables based on specified conditions. In this article, we will explore the JOIN and DIVISION operations in depth, including their syntax, types, and examples of how they can be used in SQL and other programming languages. What is a JOIN operation? A JOIN operation combines rows from two or more tables based on a related column or set ...
Read MoreBenefits of Content-Addressed Storage
Content-addressed storage (CAS) is a type of data storage that uses unique identifiers, known as hashes, to store and retrieve data. CAS systems offer several benefits over traditional storage systems, including improved data integrity, easier data management, and faster retrieval times. In this article, we'll explore the benefits of CAS in detail and provide code examples to help you get started with implementing a CAS system. Improved Data Integrity One of the major benefits of CAS is improved data integrity. In traditional storage systems, data is typically stored based on its location on a physical storage medium, such as a ...
Read MoreBasic operations and Working of LOB
LOB, or Large OBject, is a data type in database management systems (DBMS) used to store large amounts of unstructured data, such as text, images, and videos. LOB data types are useful for storing and manipulating data that does not fit neatly into a traditional row-and-column structure, such as documents, graphics, or audio files. In this article, we will explore the basic operations and working of LOB data types in DBMS and SQL. We will also provide examples of how to use LOB data types in SQL for storing and manipulating large amounts of unstructured data. Types of LOB Data ...
Read MoreHow to Automatically Increase a Letter by One to Get the Next Letter in Excel?
Sometimes in Excel, you want to number the items by letters instead of numbers, and tying them manually can be a time-consuming process. We can use the automated process to get the result. When we are increasing the value of a number, we can directly use the auto-fill handle, but if we use the auto-fill handle to increase a letter, it will not work. This tutorial will help you understand how we can automatically increase a letter by one to get the next letter in Excel. This tutorial includes two methods one for a single letter and one for a ...
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