Upload data from local to remote database

Hello everyone,   I want to start a project which basically will be a desktop or windows project that will be installed in the users system and they will fetch or insert the data into a local database. And when there system is connected to the internet all the data needs to be transferred to the online database. Basic features in this project will be saving, updating,deleting,fetching the records from the database.   So how should i start with this project. Which database should i use as LocalDB and which database should i use for OnlineDB. I want to do the code in C# .NET. Can i use Microsoft Access as LocalDB and Sql Server as OnlineDB?   I have to use the OnlineDB keeping in mind that there will also be an android application later on that we need to create that will access this online database for all the notifications.   Please give your suggestions, it will be highly appreciated.     Thank ...