Решение нашел. Вопрос закрыт.
import Foundation
import SQLite
class Database {
static let shared = Database()
public let connection: Connection?
public let dbFileName = "Example.db"
private init() {
let dbPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first as String!
do {
connection = try Connection("\(dbPath!)/Example.db")
} catch {
connection = nil
let nserror = error as NSError
print ("Cannot connect to Database. Error is: \(nserror), \(nserror.userInfo)")
}
}
}