CryptoCurrency Entity with Room

CryptoCurrency.kt

@Entity(tableName = "CryptoCurrency")
data class CryptoCurrency(
    @PrimaryKey
    val id: String,
    val changePercent24Hr: String?,
    val marketCapUsd: String?,
    val maxSupply: String?,
    val name: String?,
    val priceUsd: String?,
    val rank: String?,
    val supply: String?,
    val symbol: String?,
    val volumeUsd24Hr: String?,
    val vwap24Hr: String?
)

//Room Library in your app build.gradle file
def room_version = '2.3.0-alpha02'
kapt "androidx.room:room-compiler:$room_version"
implementation "androidx.room:room-runtime:$room_version"
implementation "androidx.room:room-ktx:$room_version"
implementation "androidx.room:room-testing:$room_version"