Ninja Database Lite is a light and nimble database for Windows Phone 7, Silverlight 3, Silverlight 4, Silverlight 5, .NET 3.5 and .NET 4.x. It is under 100KB and is built for high performance. Easily save and load any public object to isolated storage. The entire object graph is saved. Ninja Database Light uses a custom binary serialization library to save the data in a compact format. The serializer can also be used to convert an object into bytes and send to your web service, WCF Service, or cloud service. Types are automatically registered and cached. Industry standard AES encryption, and Mini LZO compression is included. The database can be encrypted and compressed or the library can be used to encrypt or compress other files in isolated storage. Download the full list of features.

            List<Person> personList = new List<Person>(); 
            Person person = new Person(); 
            person.Name = "John"; 
            person.PersonId = 1; 
            personList.Add(person); 

            NinjaDb ninja = new NinjaDb(); 

            //Save the list 
            ninja.Save(personList); 

            //Load the list 
            personList = ninja.Load<List<Person>>(); 

            //Delete the list 
            ninja.Delete<List<Person>>();

Only for V.I.P