Found 784 Articles for Data Visualization

In communication systems, the data transfer between a sender and a receiver follows a particular mode which is also known as the "transmission mode". On the basis of the nature of data sent and received, we can categorize the Transmission modes as Simplex, Half−duplex, and Full−duplex. Read this article to find out more about these transmission modes and what sets them apart. Simplex Mode of Data Transmission In a data communication network, when there is a single movement of data or one control movement of data from the sender to the receiver, then it is called the Simplex mode of ... Read More

Both sequence diagrams and activity diagrams are commonly used in software engineering to model the interactions and flows within a system. They are also useful in other fields, such as business process modeling, to model and analyze the flow of activities or interactions within a business process. Read this article to find out more about sequence diagrams and activity diagrams and how they are different from each other. What is Sequence Diagram? A sequence diagram is a diagram in that is used in representing the sequence of messages flowing from one object to another. The main objective of a sequence ... Read More

Both Super Key and Candidate key are used to uniquely identify a record in a table. These keys are also used to create relationship between tables. Both keys can have null values. Both concepts are important for database design and management. Read this article to find out more about super key and candidate key and how they are different from each other. What is a Super Key? In relational databases, a single attribute (or a set of attributes) that are used to uniquely identify all attributes in a relation is referred to as a super key. For example, a ... Read More

In computer programming, a datatype represents the type and nature of data that is to be used by the user. It is the data type that tells the compiler or interpreter how to deal with the data and provide corresponding storing location in computer memory. According to the nature of data, the data types can be of two types namely Fundamental Datatype and Derived Datatype. Both these datatypes are extensively used in computer programming. They are equally important when we require to implement the business logic over the data. Read this tutorial to find out more about Fundamental and Derived ... Read More