Using Postgresql And Python For Data Evaluation

August 27, 2022

What is Data Evaluation?

When software developers create any new platform, millions of data blocks are produced daily and even hourly!

Data evaluation refers to gathering raw data from programs and converting it into information that the user can utilize to make decisions about the program. Data evaluation helps the user understand the workings of a program (to calculate fuel bills, for example) by identifying, cleaning, and modeling data to help make decisions. Data evaluation is currently used in many businesses to help lower costs and increase production and efficiency.

When it comes to evaluating data, both Python and PostgreSQL are suitable options. But which one is better? Let’s have a look.

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What are PostgreSQL and Python?

PostgreSQL is an open-source data administration system, while Python is a modern programming language. Both of these tools are very useful for data evaluation because of their ease of use and wide availability.

However, who wins the PostgreSQL vs Python race? Let’s find out!

Why Do I Use PostgreSQL?

PostgreSQL is widely used by developers today due to a variety of reasons.

1. History and Community Support

PostgreSQL has been active for 20+ years with a huge community-based support system that offers answers and solutions to many data queries and helps developers using PostgreSQL understand their data analyses better.

2. Numerous Features

PostgreSQL is highly scalable and allows multiple users to use the application simultaneously. This tool can evaluate large quantities of data without crashing, supports multi-lingual characters, and allows debugging and testing of data. It also has a detailed query planner with backup systems to restore or save your data so that you may carry out your analysis without any fear of leaks.

3. Easy Access and Modification

Since PostgreSQL is an open-source data management system, users can modify it to test their data without incurring additional charges. Plus, PostgreSQL beats Python as far as community support is concerned since the loyal community routinely reports bugs and faults in the tool, helping it to improve and upgrade.

4. Compatibility With Many Types of Data

PostgreSQL supports data like integers, Boolean values, floating numbers, and characters while also being compatible with images, videos, and sound. Hence, it allows the user to evaluate a wide range of software data without needing any other tool.

Why do I Use Python for Data Evaluation?

Python and PostgreSQL are both widely used as data administration tools, but Python has some advantages over its rival.

1. Versatility and Readability

Python and PostgreSQL apply to an array of data types and are commonly used for data evaluation and cleaning. However, Python is also one of the most readable languages and allows for quick identification of any bugs in the program data, thus, allowing programmers to fix the faults in their program by easily identifying the line of code.

2. Easy Syntax

This is where PostgreSQL loses to PythonThe numerous documentation present for PostgreSQL acts as a double-edged sword since it can overwhelm new users. Python has a very English-like syntax and is easy to learn. Therefore, new programmers quickly become proficient and use it for data evaluation.

3. Detailed Libraries

Python has a rich collection of commands and code present in its libraries. These libraries are open to the public and have built-in data analysis tools to help programmers troubleshoot and fortify their programs. Python also allows users to analyze visual and graphics data by providing a wide range of easy-to-use tools.

4. Web-based Tools

Pictures are worth a thousand words. Python supersedes PostgreSQL by using charts, graphs, and other web-based tools to give a picturized explanation of data trends and structure in a program, giving users a better idea before they begin cleaning, debugging, and modeling the data.

Python and PostgreSQL: the winner is…

Despite the features and advantages offered by each tool, PostgreSQL would win the competition solely due to the greater efficiency it provides in data evaluation. Users report that data evaluation proves to be faster with PostgreSQL than Python. Data evaluation involves four main steps:

  • Evaluate
  • Clean
  • Transform
  • Model

PostgreSQL beats Python in the first three processes. The tool can analyze data blocks faster than Python because it connects directly with the database and provides detailed reports about water, electricity, sewage, gas consumption, etc., by large-scale businesses.

It is also better for cleaning bugs because, with Python, any faults in a program (for calculating the total balance in a bank, for example) have to be fixed in the raw program code. Identifying the exact line in the entire program, fixing it, running simulations to check if the problem is resolved, then uploading the program to the database is a laborious and time-consuming job. With PostgreSQL instead of Pythonfixes are made directly in the database, lowering computational time and cost.

How to Use PostgreSQL and Python for Data Analysis?

1. Evaluating Data

First, you must select the data you want to evaluate. With PostgreSQL instead of Python, you can do this with the ‘Select*’ command. PostgreSQL is more efficient since you can input your query, and the above-mentioned command will produce the faulty data you wish to clean.

Multiple combinations of ‘Select*’ can help judge different sorts of data. In Python, however, you will have to print the code repetitively to analyze any mistakes and bugs for you to clean. This process can be time-consuming and expensive.

2. Cleaning Data

To accurately and effectively analyze data, the data collected must be clean (free of bugs and errors). PostgreSQL defeats Python yet again due to its ‘GROUP BY’ command. You can use this prompt to sort and arrange your data however you like or even pull up any existing blocks of code by name to make changes. PostgreSQL’s libraries also offer many CTEs (Common Table Expressions) to help clean up your code and observe trends.

3. Transforming Data

Python involves the labor-intensive task of reorganizing any code blocks through rewriting because it does not have commands to manipulate data like PostgreSQL. Thus, PostgreSQL takes the cake in the third match as well.

4. Modelling Data

An easy way to study and analyze the data obtained upon completion of the previous three steps is through graphical representation. PostgreSQL and Python can provide you with a histogram to show your data (for example, the number of employees of each rank in a company and their pay scale).

Python comes back with a vengeance in this round. PostgreSQL involves the use of the ‘histogram()’ command with a long block of code with CTEs to generate the graph. In comparison, Python requires two lines of code to print out the histogram with the ‘hist()’ and ‘show()’ commands.


PostgreSQL and Python are both powerful data management tools and have some overlapping functions. After considering all the factors, PostgreSQL is the unanimous winner. People generally prefer to use PostgreSQL instead of Python for data analytics because it is faster and more convenient, while Python is more suited to programming.

If you want to kickstart your engineering career with Fortune 500 companies or hire capable employees, visit Xperti. We specialize in helping you achieve your career and hiring goals in the fields of technology, engineering, and programming. For hiring a specialist in PostgreSQL and Python or any other programming language, get in touch today!

Also Read: Why Choose Python For Web Development

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