projektsiooniklass

Projektsiooniklass is a term used in certain software development contexts, particularly in object-relational mapping (ORM) and data access layers, to describe a design pattern. The core idea of a projektsiooniklass is to create a class that represents a specific projection of data from a database or another data source. This means the class only includes the fields or attributes that are relevant for a particular operation or view, rather than an entire table's worth of columns.

The purpose of using projektsiooniklassid is to improve efficiency and clarity. By selecting only the necessary data, applications can reduce the amount of data transferred between the database and the application, leading to better performance. It also helps in defining clear interfaces for data manipulation, preventing accidental exposure or modification of irrelevant data. For example, a user list might only need the user's name and email, so a projektsiooniklass for this view would only contain those two properties, even if the user table has many more columns.

Projektsiooniklassid are often distinct from entity classes, which typically represent the full structure of a database table. While entity classes are used for full CRUD (Create, Read, Update, Delete) operations, projektsiooniklassid are primarily used for read operations and for passing data to views or other components that require a specific subset of information. This separation of concerns makes the codebase more organized and maintainable.