How to make a data store with tables?

I need a data store that has three tables in it. I have this so far. I don't know how to make it so that it saved tables.

local DATA = game:GetService("DataStoreService"):GetDataStore("SaveNames");

game.Players.PlayerAdded:connect(function(player)
    local blocks = Instance.new("Folder", player)
    local names = Instance.new("StringValue", blocks)
    local positions = Instance.new("IntValue", blocks)
    local sizes = Instance.new("IntValue", blocks)
    blocks.Name = "Blocks"
    names.Name = "Names"
    positions.Name = "Positions"
    sizes.Name = "Sizes"
    if DATA:GetAsync(player.userId) then
        names.Value = DATA:GetAsync(player.userId)[1]
        positions.Value = DATA:GetAsync(player.userId)[2]
        sizes.Value = DATA:GetAsync(player.userId)[3]
    end
end)

game.Players.PlayerRemoving:connect(function(player)if player:FindFirstChild("Blocks") then
        DATA:GetAsync(player.userId, {player.Blocks.Names.Value, player.Blocks.Positions.Value, player.Blocks.Sizes.Value})
    end
end)