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database design

2 Articles

Web Development

Data Access Object Pattern Explained: Architecture and Implementation

By Yasir Hafeez

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October 25, 2026

7 Min Read

Discover how the data access object pattern separates database queries from business logic to create maintainable, testable software architecture.

Software Solutions

What is Single Table Inheritance?

By Yasir Hafeez

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September 30, 2026

7 Min Read

Single Table Inheritance (STI) is a database design pattern for mapping an entire hierarchy of object-oriented classes into a single relational database table. It uses a special column to differentiate between the various types of objects stored.

I'm Yasir Hafeez, a technology writer at Team 4 Solution, where I cover AI and automation, cloud and DevOps, cybersecurity, and business and startup strategy. I hold an MSc in Information Technology and have been writing about technology for two years. I write about the parts practitioners actually ask about rather than the parts that are easy to summarise: what a migration really costs once you count engineer time, where vendor documentation stops being useful, and which trade-offs only matter above a certain scale. When the honest answer is that it depends, I say what it depends on. When I'm not certain, I say that too. If you spot an error in anything here, email me at secure.accesshub@gmail.com and I'll correct it.

database design

Data Access Object Pattern Explained: Architecture and Implementation

What is Single Table Inheritance?

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