DBDataPermission
Enables a .NET data provider to help ensure that a user has a security level adequate for accessing data.
                using System.Security;
using System.Security.Permissions;
namespace System.Data.Common
{
    public abstract class DBDataPermission : CodeAccessPermission, IUnrestrictedPermission
    {
        public bool AllowBlankPassword { get; set; }
        protected DBDataPermission()
        {
        }
        protected DBDataPermission(DBDataPermission permission)
        {
        }
        protected DBDataPermission(DBDataPermissionAttribute permissionAttribute)
        {
        }
        protected DBDataPermission(PermissionState state)
        {
        }
        protected DBDataPermission(PermissionState state, bool allowBlankPassword)
        {
        }
        public virtual void Add(string connectionString, string restrictions, KeyRestrictionBehavior behavior)
        {
        }
        protected void Clear()
        {
        }
        protected virtual DBDataPermission CreateInstance()
        {
            return null;
        }
        public override IPermission Copy()
        {
            return null;
        }
        public override void FromXml(SecurityElement securityElement)
        {
        }
        public override IPermission Intersect(IPermission target)
        {
            return null;
        }
        public override bool IsSubsetOf(IPermission target)
        {
            return false;
        }
        public bool IsUnrestricted()
        {
            return false;
        }
        public override SecurityElement ToXml()
        {
            return null;
        }
        public override IPermission Union(IPermission target)
        {
            return null;
        }
    }
}