presence_sample_v2/data/Repository/IGroupRepository.cs

using data.DAO;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace data.Repository
{
    public interface IGroupRepository
    {
        public IEnumerable<GroupDAO> getAllGroup();
        public Task<IEnumerable<GroupDAO>> getAllGroupAsync();
        public bool addGroup(GroupDAO group);

        public bool addGroupWithStudents(GroupDAO groupDAO, IEnumerable<UserDAO> userDAOs);
    }
}