Introduction DFD is one of the most important system tools used for a system to develop it. Definition A Data Flow Diagram (DFD) is a visual/graphical representation of how data flows within a system or process or organization. Data Flow Diagrams are essential tools in system analysis and design, helping Read more…
History Peter Chen developed the E-R Diagram in the 1970s and published his proposal for entity relationship modeling in a 1976 paper titled “The Entity-Relationship Model: Toward a Unified View of Data”. Peter Chen was a computer scientist who worked on improving database design. Introduction E-R diagram stands for Entity-Relationship Read more…
Introduction/Overview of Fundamentals of DBMS The fundamentals of DBMS is a critical component of modern computing systems, providing the foundation for data storage, management, and manipulation in a wide range of applications and industries. Definition of DBMS A Database Management System (DBMS) is software designed to manage, store, and retrieve Read more…
There are the following categories of In-Built Functions in Tableau:- (A) Number Type In-built Functions in Tableau Number type in-built functions in Tableau are used to perform calculations or manipulations on numeric data within our visualizations or calculated fields. These functions can be applied to measure values or to create Read more…
Data Types and Operators in Tableau Data Types in Tableau In Tableau, data types define the nature of the values stored in fields and columns. Understanding data types is crucial for proper data analysis, visualization, and manipulation within Tableau. Automatic or Dynamic Data Type : Tableau automatically assigns data Read more…
Basics or Fundamentals of Tableau in DV are categorized into – Introduction of Tableau There are several versions of Tableau used in various work standards of visualizations. These are – Tableau Desktop: This is with the authoring tool used to create visualizations and dashboards. Tableau Server: This is a self-hosted enterprise Read more…
Categories of Communication System Model in DV Introduction of Communication System Model in DV When dealing with data visualization within communication systems, a model that aligns with the flow of data and information through the visualization process is essential. Although not as formalized as the OSI model for communication systems, Read more…
Introduction of Data Visualization Data Types In Data Visualization, the relationship between data types and visualization techniques is crucial for effectively communicating insights. Each type of data requires different visualization techniques and tools to effectively analyze and communicate insights. Choosing the right visualization method depends on factors such as the Read more…
Introduction (Fundamentals of DV) Data visualization(DV) is both an art and a science. It involves a creative design process along with a thorough understanding of the data and the principles of effective communication. Definition of DV Data visualization is a powerful tool that translates complex data into a visual format, Read more…