The Basics of the PHP PDO Create, Read, Update and Delete.
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CREATE, READ, UPDATE, DELETE
When we are building APIs, we want our models to provide four basic types of functionality. The model must be able to Create, Read, Update, and Delete resources. Computer scientists often refer to these functions by the acronym CRUD. A model should have the ability to perform at most these four functions in order to be complete. If an action cannot be described by one of these four operations, then it should potentially be a model of its own.
CRUD is also relevant at the user interface level of most applications. For example, in address book software, the basic storage unit is an individual contact entry. As a bare minimum, the software must allow the user to
- create or add new entries;
- read, retrieve, search, or view existing entries;
- update or edit existing entries;
- delete, deactivate, or remove existing entries.
Without at least these four operations, the software cannot be considered complete. Because these operations are so fundamental, they are often documented and described under one comprehensive heading, such as “contact management”, “content management” or “contact maintenance” (or “document management” in general, depending on the basic storage unit for the particular application).
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