Data visualization signs to the techniques used to information by encoding it as visual objects such as bars, points and lines in graphics. The goal is to communicate data and information to users in a clear and efficient manner. Data visualization is helpful to understand the structure of the data, determine the outlier, see the trends or patterns of the data, evaluate the results, and communicate these findings effectively to audience. This is one of the steps in data analysis, and this step is called with Exploratory Data Analysis (EDA).

Python provides many visualization packages for EDA. One of them…

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Start by learning the meaning of the relational database. A relational database is a type of database that stores and provides access to data points that are related to one another. Relational databases consist of tables, columns, rows, keys, and relationship between tables. There are three types of relationships between the tables, and these are one to one, one to many and many to many relationships.

One to one (1:1) Relationship

One to one relationship means one entity in a table is related to just one entity in another table. It should be rare in any relational database design.



Data Scientist, Industrial Engineer

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