Mapping Cardinalities, Relationship, ER-Diagram Mapping Cardinalities In this tutorial, we shall discuss the Mapping Cardinalities, Relationships and ER-Diagram. There are four different types of mapping cardinalities. They are: One to One: If we consider the two sets A&B. The entity in A associated with at most one entity in B and in the same way, …
Types of Keys There are many types of keys associated with database management. Out of that, the most important and necessary keys are discussed in this tutorial Super Key: A combination of one or more attributes, with which we can uniquely identify a particular entity is known as a super key. For Example: If we …
Data Abstraction, Users, Data Models and Languages In this tutorial we will discuss about the concepts of data abstraction, users of the database, database models and introduction to data languages. Data Abstraction Data abstraction shows how the data is stored from the low-level to the high-level. In this data abstraction three levels are there: Physical …
Database Management System Introduction This tutorial is a start about the introduction to database management system and acid properties. Database management is a process to store the data, retrieve the data, and perform the manipulations on the data with proper security. Traditionally data is stored in the file formats, but it is hard to obtain …
Dictionaries and Tuples in Python In this tutorial we shall discuss about the dictionaries and tuples in python. In the previous tutorial we have discussed: What is List? Functions that can be useful in Lists. In this tutorial, you will come to know clearly about Dictionaries and Tuples. In general, the dictionaries are a type …
Lists in Python Topics covered in the last tutorial, Basics of Strings and Arithmetic Calculations. In this tutorial we will be discussing about the lists in python. Lists: Lists are a type of data structure in python, which can hold different forms of data types( int, float, char…. ) unlike in other programming languages. Each …
Basics of Python Small announcement for upcoming tutorials: We will have a general overview of python programming language. The requirement to proceed further is to have basic knowledge about programming, if not please check out the course – Click Here. If you are much aware of the python programming language and about the basics of …
Getting Started with Data Science In this complete tutorial, you will complete the course of Data Science. Data Science is all about using data to solve problems. Many people have a doubt why is data science so important? It is important as the fundamental goal of data science is to help companies to take quick …
Interfacing DHT11 with NodeMcu ESP8266 and using Ubidots Cloud In this tutorial, we discuss how to Interface DHT11 with NodeMcu ESP8266 and Sending its Data to Ubidots Cloud. Ubidots is an IoT(Internet of Things) data analytics and visualization company. We turn sensor data into information that matters for business-decisions, machine-to-machine interactions, educational research, and increase …
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