Master the key features and functions of the Korm framework

The Korm framework is a lightweight and powerful ORM (object relationship mapping) tool for Kotlin language.Through Korm, developers can easily map the Kotlin object to the relationship model in the database, thereby achieving durable data. Korm provides many key features and functions, the following are the few of them: 1. Object mapping: Korm can automatically map the Kotlin object to the record in the database table.Developers only need to define a KOTLIN class and use the attributes of the annotations. Korm will automatically create the corresponding table structure and save the data into the database. Example code: kotlin @Table("users") data class User( @Column("id", primary = true) val id: Int, @Column("name") val name: String ) In the above examples, the annotation of@Table` is used to specify the data table name. 2. Query Language: Korm provides a simple and powerful query language, which can build query sentences through chain calls.Developers can specify filtering conditions, sorting rules and paging parameters according to their needs. Example code: kotlin val users = korm.from<User>().where { it["name"] like "%John%" }.orderBy("id").limit(10).getAll() The above code uses Korm's query language to select the top 10 users from the ID of "John" in the name of "John". 3. Affairs management: Korm allows developers to use transactions to manage the operation of databases.Affairs can ensure that multiple database operations are all successful or all fails, maintaining the consistency of data. Example code: kotlin korm.transaction { val user = User(1, "John") korm.insert(user) korm.update(user.copy(name = "New Name")) } The above code uses Korm's transaction management function, first inserts a new user, and then updates the user's name. In addition to the above -mentioned key features and functions, Korm also provides other functions, such as automatic creation table structure, batch insertion and updating, and supporting multiple database engines.Developers can choose suitable configuration and usage methods according to actual needs. To sum up, the Korm framework is a functional ORM tool. It helps developers to easily manage the relationship between KOTLIN objects and database by providing simple and powerful interfaces, and provide a series of functions to simplify database operations.Whether it is a small project or a large application, Korm can provide developers with convenient and efficient data persistence solutions.