others
Using Python and MySQL in the ETL Process: SQLAlchemy
12 Jun 2019
SQLAlchemy helps you work with databases in Python. In this post, we tell you everything you need to know to get started with this module.
In the previous article, we talked about how to use Python in the ETL process. We focused on getting the job done by executing stored procedures and SQL queries. In this article and the next, we’ll use a different approach. Instead of writing SQL code, we’ll use the SQLAlchemy toolkit.
others
Using Python and MySQL in the ETL Process
22 May 2019
Python is very popular these days. Since Python is a general-purpose programming language, it can also be used to perform the Extract, Transform, Load (ETL) process. Different ETL modules are available, but today we’ll stick with the combination of Python and MySQL. We’ll use Python to invoke stored procedures and prepare and execute SQL statements. We’ll use two similar-but-different approaches. First, we’ll invoke stored procedures that will do the whole job, and after that we’ll analyze how we could do the same process without stored procedures by using MySQL code in Python.
design_patterns
Designing a Database for a Recruitment System
8 May 2019
Do you want to learn how to design a database system and map a business process to a data model? Then this post is for you. In this article, you’ll see how to design a simple database schema for a recruitment company. After reading this tutorial, you will be able to understand how database schemas are designed for real-world applications. The Recruitment System Business Process Before designing any database or data model, it is imperative to understand the basic business process for that system.
example_models
A SaaS Subscription Data Model
17 Apr 2019
SaaS (Software as a Service) is one of the three main components of Cloud computing. Usually, SaaS applications are web-based and can handle many different users at one time. Subscription-based solutions are very popular SaaS offerings. Some well-known SaaS products include Microsoft Office 365, Amazon Web Services (AWS), Slack, Jira, Stripe, and (of course) Vertabelo! Today we’ll take a look at a data model that would allow us to manage SaaS subscriptions.
design_patterns
The Important Dates Data Model
3 Apr 2019
Are you forgetting something? A data model to help you remember important dates – before they happen. Have you ever forgotten an important date – your mom’s birthday or your anniversary? Or that you’re giving a lecture? Yup, things like that happen in real life. Maybe not to all of us, but to some of us (including me), they certainly do. To prevent such disasters, we’ll create a data model you could use as the background for an application that will notify you right on time.
example_models
A Data Model for an Online Musical Equipment Shop
20 Mar 2019
What kind of data model supports an online musical equipment store?Musical equipment shops used to be one of those old-fashioned industries, one that you wouldn’t expect could (or should) adapt to the online world. It wasn’t unreasonable to paint such a picture. After all, you can’t choose your ideal guitar based solely on magazine pictures, can you? Musicians and wannabe-musicians need to try various instruments, hearing and feeling how each one responds when played.
example_models
A Data Model for a Wine Store
6 Mar 2019
Producing a great wine is a really complex process, one that takes many years to master. Offering and selling wines to customers is another complicated process. There are many stores specializing in only one product. If you want that product, you’ll go to that store. Wine stores are an example of what I’m talking about. What would be the data background of a wine store? Let’s find out.In many ways, a wine store is like any other store. So, you can expect this data model to have most of the tables common to any other retail business. Still, there will be some details that will distinguish this model from others.
example_models
A Peer-to-Peer Lending Platform Data Model
20 Feb 2019
There are many online portals which allow investors to lend money directly to individual borrowers – with no banks acting as intermediaries. What data model might underlie such a site?Online lending platforms bring borrowers and investors together and allow them to choose to whom they want to lend their money (in the case of investors) and who they want to borrow money from (in the case of borrowers). Some peer-to-peer lending sites also allow borrowers and investors to make their own deals in terms of lending rates (i.e. interest rates) and loan tenure.
example_models
Automobile Repair Shop Data Model
6 Feb 2019
Running an automobile/car repair shop is a really complex business. You’ll need to make appointments while some customers will drive in and you don’t want to have them wait for hours. Also, you’ll need to organize employees, track repairs, materials, charge customers, etc. You’ll definitely need an IT solution and, of course, a data model in the background. Today we’ll talk about one such model.The IdeaI’ve already mentioned that this business model is really complex. Therefore, I won’t try to cover everything. I’ve intentionally omitted tracking materials and spare parts and also simplified some parts of the model. The reason for that is pretty simple. If I’ve included really everything, the model would simply be too large for an article of the reasonable size. So, let’s start.
example_models
The Smart Home Data Model
24 Jan 2019
Smart homes used to be strictly in the future; now they are a reality. Most of us have heard about them, but they are not so widespread as they will be in the near future. Managing your home the ‘smart’ way will definitely produce a lot of data. Today, we’ll analyze a data model we could use to store smart home data.The Data ModelWhen you think of a smart home, you probably think of remotely locking and unlocking your home, activating alarms, lights, or cameras from your phone, having thermometers that automatically manage your heating and cooling, etc. But smart homes can do much more. You can connect a number of smart devices and controllers to achieve many complex functionalities. You can send instructions to devices or read their statuses from wherever you are.
