Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Introduction to DAO Data Access Objects (DAO) is a design pattern commonly used in software development to abstract the underlying data storage mechanism from the business logic and provide a consistent interface for accessing data in a database or other data storage systems. DAO acts as an intermediary between the application's business logic and the data storage system, providing a set of well-defined methods and interfaces to perform common data operations, such as creating, retrieving, updating, and deleting data. DAOs encapsulate the details of how data is stored and retrieved, allowing the rest of the application to work ... Read More
In this article, we will discuss the Multi-tier architecture of Data Warehouse. Introduction A data warehouse is like a big storage house where information is kept so that people can use it to make better decisions. This information comes from different places like databases and other systems that keep track of transactions. It gets added to the warehouse regularly. The warehouse is a central place where all this data is organized and can be easily analyzed. It consolidates data from different sources. It transforms into a format that can be accessed and analyzed. To ensure the efficient functioning of a ... Read More
This is a protocol used to control concurrency in a distributed database environment. It helps to ensure the consistency and integrity of data in distributed database systems. Concurrency control in databases allows multiple transactions to access the same data simultaneously. In this article, we will discuss the rules and regulations. That is required to keep in mind while applying MOSS Concurrency Control Protocol. Overview of Distributed Locking Distributed locking is a mechanism. It is used to synchronize access to shared resources in a distributed computing environment. It involves locking shared resources to prevent other transactions from accessing them concurrently. Distributed ... Read More
Introduction Once Theodosius Dobzhansky quoted that “Nothing in biology makes sense except in the light of evolution.” This generalization has been validated by recent progress in Biochemistry and Molecular biology. The remarkable similarity of metabolic pathways and gene sequence across the phyla argues strongly that all modern organisms are derived from a common evolutionary progenitor by a series of small changes, each of which conferred a selective advantage over the other. Evolution by Gene Duplication and Neofunctionalization Sometimes due to mutations duplication takes place which leads to the introduction of a second copy of the whole gene into the chromosome ... Read More
User Defined Types (UDTs) in Cassandra allows users to create custom data types. With UDTs, you can manage and organize data when multiple data fields are grouped together in a single column. In this article, we will discuss how to modify UDTs in Cassandra with the help of CQL examples. User Defined Data (UDT) It has the ability to attach multiple data fields in a single column. UDTs play an important role in that they can group together related fields of data (such as field 1, field 2, etc.) and allow names and types. UDT helps to add flexibility to ... Read More
In DBMS, Superclass/subclass relationships with a single super-class. A shared subclass may be represented in multiple superclass/subclass relationships, where each relationship has a single superclass. Understanding Superclass/Subclass Relationships in DBMS A single superclass/subclass relationship using more than one superclass. Each superclass represents a distinct entity type. Subclass represents a group of objects that is a subset of the UNION of the distinct entity types. This subclass is known as union type or a category. Example Consider the scenario where we have three distinct entity types: PERSON, BANK, and COMPANY. In a motor vehicle registration database, a vehicle owner can be ... Read More
In this article, we will discuss Model Planning for Data Analytics, Role Models and Challenges in Model Planning. We will also discuss the importance of model planning and ways to make an effective model plan. Data analytics is an important component of business strategy nowadays. It helps businesses make informed decisions by extracting meaningful insights from large amounts of data. But model planning plays an important role in data analytics. Model planning involves selecting the right analytical models and techniques that will effectively analyze and interpret the data, thereby helping in making accurate decisions. Data Analytics Data analytics is the ... Read More
Introduction: Definition of Dearness Allowance Dearness Allowance (DA) is provided by the government to its staff members as well as a retiree to mitigate the impact of inflation. To help them deal with the rising costs, government employees' effective salaries must constantly be increased. The government has taken numerous steps to reduce inflation, but only limited effectiveness has been seen because prices still fluctuate based on the market. The dearness allowance is determined in accordance with the place of employment of the employee because the impact of prices differs. As a result, depending on whether a person works ... Read More
In this article, we will discuss the different methodologies like waterfall, agile and DevOps methodologies. We will also compare them in tabular format. Large Scale Distributed Systems Large-scale distributed systems have large amounts of data, many concurrent users, scalability requirements, and throughput requirements such as latency, etc. So, We need methods that can help developers and engineers efficiently. This can build and manage these Large-scale distributed systems. In large scale distributed systems, there are various challenges and the major challenge is that the platform has become huge. So it is not able to meet all these needs present in the ... Read More
Introduction Cerebrovascular accident (CVA) is referred to as a stroke where free flow of blood to a portion of the brain shuts off, resulting in higher chances of death of the person depending on the severity of the medical issue. The brain cells begin to degenerate within a few minutes because the blood is unable to provide them with the essential nutrients and oxygen they require. Death, serious impairments, or even permanent brain damage could happen. Symptoms of stroke Keep a close eye on the time the symptoms started if you suspect that you or someone you are ... Read More