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Example Analysis of Table entry pattern in PHP data Source Schema

2025-01-19 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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In this issue, the editor will bring you an example analysis of the table entry pattern in the PHP data source architecture model. The article is rich in content and analyzes and describes it from a professional point of view. I hope you can get something after reading this article.

In the book Enterprise Application Architecture pattern, martin fowler divides the application development that we usually come into contact with into three layers: presentation layer, domain layer and data source layer.

The domain logic patterns of the domain layer are: transaction script, domain model and table module.

1. The transaction script is the easiest to understand and the easiest to develop, but because it is easy to cause code duplication and other problems, it is not conducive to later maintenance, so it is more suitable for developing businesses with relatively simple logic, for example, there are only a few enterprise stations that display enterprise information.

2. The domain model is the most complex of the three models, with obvious shortcomings and high learning costs, but it also has distinct advantages, that is, the code is clear, the reuse rate is high, and it is convenient for later maintenance. It is more suitable for complex and changeable applications.

3. The table module schema is between the transaction script and the domain model. We usually use the table module schema when developing small and medium-sized projects.

Well, individuals only have the above superficial understanding of the domain logic model, and we will talk about it in detail later after we have a deeper understanding of the concept.

Here I would like to talk about the data source schema of the data source layer. There are mainly four kinds of data source architecture patterns: table entry mode, row entry mode, activity record and data mapper.

Today we will first talk about the simplest table entry mode.

The table entry pattern is defined in the book as an object that acts as an access entry to a database table, and an instance processes all rows in the table.

It can be understood as encapsulating the sql statements scattered on each page before. A table is an object, which handles all the business logic related to the table, which improves the reusability of the code.

Now come to think of it, when I first graduated, I often used the meter entrance mode.

For more information on how to implement it, please see the code:

Database.php

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