Python Tutorial

Introduction Python Features Python Applications Python System requirements Python Installation Python Examples Python Basics Python Indentation Python Variables Python Data Types Python IDE Python Keywords Python Operators Python Comments Python Pass Statement

Python Conditional Statements

Python if Statement Python elif Statement Python If-else statement Python Switch Case

Python Loops

Python for loop Python while loop Python Break Statement Python Continue Statement Python Goto Statement

Python Arrays

Python Array Python Matrix

Python Strings

Python Strings Python Regex

Python Built-in Data Structure

Python Lists Python Tuples Python Lists vs Tuples Python Dictionary Python Sets

Python Functions

Python Function Python min() function Python max() function Python User-define Functions Python Built-in Functions Python Recursion Anonymous/Lambda Function in Python apply() function in python Python lambda() Function

Python File Handling

Python File Handling Python Read CSV Python Write CSV Python Read Excel Python Write Excel Python Read Text File Python Write Text File Read JSON File in Python

Python Exception Handling

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Python OOPs Concept

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Python Iterators

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Python Generators

Python Generator

Python Decorators

Python Decorator

Python Functions and Methods

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Python Modules

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Python MySQL

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Python MongoDB

Python MongoDB

Python SQLite

Python SQLite

Python Data Structure Implementation

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Python Advance Topics

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Python 2

What is Python 2

Python 3

Anaconda in Python 3 Anaconda python 3 installation for windows 10 List Comprehension in Python3

How to

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Python Sort List Sort Dictionary in Python Python sort() function Python Bubble Sort


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Python Kivy

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Python Tkinter

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Best Database in Python

In this tutorial, Firstly, we will understand what the term database means. Further, we will see the various databases supported in Python and when to use which one. Further, we will conclude which is the best database supported in Python.


A data structure that stores a piece of systematized information is termed a database. The databases usually contain several tables and consist of various fields. To understand this, let us consider an example of a company database. A company database may consist of tables assigned, namely for products, employees, customers, and financial records. Each table would consist of different fields related to the data kept in the table.

Now, Let’s define a database

An organized group of structured information, or data, typically stored electronically in a computer system is termed a database. It is the Database management system (DBMS) that controls the database. The data, together with the Database Management system and its application, is known as a database system which is popularly called a database.

It is impossible to call out data science without using the term data. So, data plays a crucial role in the world of data science. In most cases, the data required is stored in a DBMS which is a database management system on a distant server or the user’s hard drive. Thus, one can neither store nor retrieve information without communicating with DBMS.

Now, we will see various kinds of databases used in python language. After seeing each of them and realizing which one to use when we find out the best database for Python.

1. Python SQL Libraries

The SQL libraries are used with relational databases (RDBMS). Relational databases can store information or data in different tables; each table contains several records. One or more relations are then considered to connect the created tables.

Best Database in Python

Python SQL libraries include the following three libraries:

  • SQLite
  • MySQL
  • PostgreSQL


SQLite library was firstly a library of C language built to implement a small, fast, independent, serverless and consistent SQL database engine. Today, the SQLite library has been built into core Python, which means one isn't required to install it. One can use it. In Python, this database communication library is known as SQLite3.

It is not the best choice to use the SQLite library in a situation when concurrency is a great fear for the application as the scripting actions are sequential. In addition to it, SQLite is feeble once it comes to multi-user applications.

The situations when SQLite should be used.

  • When the user is just a beginner and is figuring out the concepts related to databases
  •  The user is using embedded applications. SQLite is a good option if the user requires portability as it is very lightweight.
  • The data is stored in a file on the user’s hard drive. SQLite can be an equivalent solution for client/server RDBMS for challenging purposes.
  • A fast connection to the data is required. The library has low expectancy as it is not required to connect to a server using SQLite.


MySQL library is one of the popularly used and famous open-source RDBMS connectors. It uses a server/client architecture consisting of a multi-threaded SQL server. It allows MySQL to perform well because it easily uses multiple CPUs. MySQL was initially written in C/ C++ and extended to support various platforms. Scalability, security, and replication are some of its key features.

To use MySQL, the installation of its connector is required. It can be done easily by running the following command on the command line:

python -m pip install MySQL-connector-python

MySQL does not perform well when it is required to execute majority insert operations or when it is required to accomplish full-text search operations.

The situations when SQLite should be used.

  • Extra security is required. Due to MySQL’s security rewards, it is ideal for applications requiring user or password authentication.
  • A multi-user support is required. MySQL supports multi-user applications, unlike SQLite and is a decent choice for distributed systems.
  • An advanced backup and interaction capabilities are desired, but with easy syntax and hassle-free installation.


PostgreSQL library is one more open-source RDBMS connective that focuses on extensibility and uses a client/server database structure. In the PostgresSQL library, The communications managing the database files and operations are known as “the Postgres process” The PostgreSQL library derives its name from here itself.

PostgreSQL is the suggested relational database while working with Python web applications.

To communicate with a PostgresSQL database, the user needs to install a driver enabling Python to perform that operation. psycopg2 is a very popular driver.

This driver can be installed by running the following command on the command line.:

pip install psycopg2

PostgresSQL library is more complicated to install and get in progress than the MySQL library. Although it offers multiple advantages, the complexity here is an issue to deal with.

The situations when PostgreSQL should be used.

  • The user is required to run an analytical applications data warehousing. PostgresSQL has great parallel processing skills.
  • The database must obey the ACID (A: atomicity; C: consistency; I: isolation; D: durability) model. In such a case, PostgresSQL provides an ideal platform to do so.
  • The research and scientific projects databases are required.


NoSQL databases offer greater flexibility in comparison with relational databases. The data storage structure in such types of databases is designed and enhanced for specific necessities.

There are four main categories of NoSQL libraries. The name of each category of libraries are as follows:

  1. Document-oriented
  2. Column-oriented
  3. Graph
  4. Key-value pair

Now, let us look at the following four NOSQL libraries.

  • MongoDB
  • Redis
  • Cassandra
  • Neo4j


Best Database in Python

MongoDB is a well-known database. It remains on the tongue of emerging developers. It is an open-source, categorized as document-oriented data storage system. We commonly use The PyMongo is taken into account to enable communication between one or more MongoDB cases through Python code. A Python ORM (Python object-relational mapper software) named MongoEngine is written for MongoDB on top of PyMongo.

To use MongoDB, The installation of an engine and the actual MongoDB libraries is required.

pip install pymongo==3.4.0
pip install MongoDB

The situations when MongoDB should be used.

  • User wants to create easy-to-scale applications which they can easily deploy.
  • The data is categorized as document-structured, but one wants to connect the power of relational database functionalities with it.
  • One has an application with numerous data structures, such as IoT applications.
  • When the user works with real-time applications such as e-commerce and content management systems.


Best Database in Python

Redis is another python NO SQL library which is open-source and categorized as an in-memory data structure store. The data structures such as strings, hash tables, lists, sets, etc., are supported here. Redis library provides high accessibility through Redis Sentinel and automatic partitioning with Redis Cluster. Redis is also considered the fastest database in the world.

The user can set up the Redis library by implementing the following instructions from the command line:

tar xzf Redis-6.0.8.tar.gz
cd Redis-6.0.8

The situations when Redis should be used.

  • When the priority is the speed in the applications.
  • The user has a well-planned design. Redis has numerous defined data structures and gives users the chance to describe explicitly how data is stored.
  • The database has a constant size. Redis can raise the lookup speed for factual information in the data.


Best Database in Python

Apache Cassandra is another Python NoSQL library. It is categorized as a column-oriented NoSQL data store intended to write heavy storage applications. Cassandra can provide scalability and high availability without negotiating with the performance. Cassandra also provides a lower potential for multi-user applications. It isn't very easy to install the Cassandra library and start working here. However, interested users can do this by referring to the official website of Cassandra.

The situations when Cassandra should be used.

  • The amount of data is huge. Cassandra offers great flexibility and rule to deal with incredible amounts of information. Thus, Cassandra is a great option for most big data applications.
  • When reliability is required, Cassandra offers consistent real-time performance for streaming and online-learning applications.
  • The priority is security. Cassandra controls security management, making it a great choice for fraud detection applications.


Best Database in Python

Neo4j library is a NoSQL graph database constructed from the ground up to influence data and relationships among them. Neo4j library joins data as it is stored, enabling queries at a higher speed. It was initially executed on Java and Scala and extended to be used in different platforms, such as Python.

It is a graph database library and has one of the finest websites and technical credentials systems. It is clear, concise, and covers all questions regarding the queries occurring while installation, how to begin with it, and finally, using the library.

The situations when Neo4j should be used.

  • Visualization and analysis of networks and their performances are required.
  • The user has to design and analyse recommendation systems.
  • Users analyse social media connections and take out data based on existing relations.
  • The user has to identify and access management operations.
  • The user has to execute numerous supply chain optimizations.


It is difficult to say which database is best. The meaning of best can vary with the requirement of the user. Thus, the best database can vary from need to need.