Develop the Resource Tier

We will develop the resource (entity) tier in this lesson, which is the first step in the process of developing the service.

We'll cover the following

- Table structure

Developing the service involves four main steps:

Creating the entity
Creating the data access tier
Creating the business service tier
Creating the JSON based REST ability

We will first write the test for the entity and then proceed with the actual entity development. First, we create two instances of Category, one of which is the root, and the other a sub-category with the root as its parent. We then check to make sure the changes were made throughout. Finally, we remove one occurrence and see if the count is one.

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Software Architecture

Managing a Standalone Entity

One-to-One Uni-directional Relationship

One-to-One Bi-directional Relationship

One-to-One Self-Referencing Relationship

One-to-Many Uni-directional Relationship

One-to-Many Bi-directional Relationship

One-to-Many Self-Referencing Relationship

Many-to-Many Unidirectional Relationship

Many-to-Many Bi-directional Relationship

Many-to-Many Bi-directional with Join-Attribute Relationship

Many-to-Many Self-Referencing Relationship

Many-to-Many Self-Referencing with Join-Attribute Relationship

Single Table Inheritance

Concrete Table Inheritance

Class Table Inheritance

Appendix

Develop the Resource Tier