Saving Data on Android

records objects
, as 
rows
 with one or more 
fields
 defined as 
columns
.
• The 
@Entity
 annotation declares that the annotated class is a Room entity, and 
you will need to generate a table.
• The 
@PrimaryKey
 annotation allows you to define a primary key for your table to 
uniquely differentiate data
.
Saving Data on Android
Chapter 6: Entity Definitions
raywenderlich.com
117

---

• The 
@ColumnInfo
 annotation lets you change the names for your columns, so you 
can use 
different naming conventions
 in Kotlin and in SQL.
• The 
@Ignore
 annotation tells Room to ignore a certain property from your class so 
it does not get converted into a column in the database.
• The 
@Embedded
 annotation can be used on an entity's field to tell Room that the 
properties on the annotated object should be represented as columns on the same 
entity. This way you can