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Introduction to nosql – NoSQL, which stands for “Not Only SQL,” is a broad category of database systems designed to accommodate a wide range of data storage and retrieval needs. Unlike traditional relational databases (RDBMS) that rely on structured data and SQL (Structured Query Language), NoSQL databases provide a flexible, scalable, and efficient way to … Read more
Hadoop Pros and Cons |Hadoop Limitations – Hadoop is an open-source framework widely used for processing and storing large datasets in a distributed computing environment. Developed by the Apache Software Foundation, Hadoop provides scalability, fault tolerance, and the ability to handle structured, semi-structured, and unstructured data. Its ecosystem includes tools like HDFS (Hadoop Distributed File … Read more
The Geometry of Virtual Worlds: Chaining the Transformations Chaining Transformations in Virtual Worlds 2025 – In virtual worlds, transformations are the building blocks that help create, position, and manipulate objects in a 3D space. But in many cases, one transformation is not enough. To achieve complex movements or alignments, we need to combine multiple transformations. … Read more
Relational Algebra Operations Using MapReduce: Grouping and Aggregation – Relational algebra is a formal language for relational databases that consists of a set of operations. Grouping and aggregation are crucial operations in relational algebra, often used to summarize data. Implementing these operations in a distributed computing environment like Hadoop involves using MapReduce, a programming model … Read more
Motion in Real and Virtual Worlds: Velocities and Accelerations Velocities and Accelerations in Virtual Worlds 2025 – Motion is all around us, whether it’s a car speeding down a road, a bird flying in the sky, or an object moving in a virtual world. Understanding motion in both real and virtual worlds requires us to … Read more
Relational Algebra Using MapReduce – Relational algebra is the theoretical foundation for relational databases, consisting of a set of operations to manipulate and retrieve data. Using MapReduce, we can implement relational algebra operations in distributed systems like Hadoop. This approach enables processing large datasets efficiently by leveraging parallelism and distributed computation. Core Relational Algebra Operations … Read more
Creating and Changing Materials and Textures in Unity Unity Material Customization Cube Plane Sphere 2025 – In this practical, you will create a simple scene in Unity that contains three basic 3D objects: a Cube, a Plane, and a Sphere. You will then apply separate materials and textures to each object, and finally, write a … Read more
Problem Description | Matrix-Vector Multiplication Using MapReduce Matrix-Vector Multiplication Using MapReduce We aim to multiply a matrix AA of size m×nm \times n with a vector vv of size nn to get a resultant vector uu of size mm: u[i]=∑j=1nA[i][j]⋅v[j]u[i] = \sum_{j=1}^n A[i][j] \cdot v[j] Where: This operation can be performed in a distributed manner using … Read more
Axis-Angle Representations of Rotation: The Geometry of Virtual Worlds Axis Angle Rotation in Virtual Worlds 2025 – In the world of virtual reality (VR) and augmented reality (AR), understanding how objects move and rotate in space is crucial. One of the key concepts used to describe rotations is the “axis-angle” representation. This method of describing … Read more
Viewing Transformations: The Geometry of Virtual Worlds Viewing Transformations 2025 Virtual World Geometry – In the world of virtual reality and 3D environments, creating immersive and interactive scenes is all about controlling how objects and environments are displayed to the viewer. One key aspect of this is understanding viewing transformations. These transformations help us manipulate … Read more