Umbraco-CMS/src/Umbraco.Core/Constants-System.cs

 namespace Umbraco.Cms.Core
{
    public static partial class Constants
    {
        /// <summary>
        /// Defines the identifiers for Umbraco system nodes.
        /// </summary>
        public static class System
        {
            /// <summary>
            /// The integer identifier for global system root node.
            /// </summary>
            public const int Root = -1;

            /// <summary>
            /// The string identifier for global system root node.
            /// </summary>
            /// <remarks>Use this instead of re-creating the string everywhere.</remarks>
            public const string RootString = "-1";

            /// <summary>
            /// The integer identifier for content's recycle bin.
            /// </summary>
            public const int RecycleBinContent = -20;

            /// <summary>
            /// The string identifier for content's recycle bin.
            /// </summary>
            /// <remarks>Use this instead of re-creating the string everywhere.</remarks>
            public const string RecycleBinContentString = "-20";

            /// <summary>
            /// The string path prefix of the content's recycle bin.
            /// </summary>
            /// <remarks>
            /// <para>Everything that is in the content recycle bin, has a path that starts with the prefix.</para>
            /// <para>Use this instead of re-creating the string everywhere.</para>
            /// </remarks>
            public const string RecycleBinContentPathPrefix = "-1,-20,";

            /// <summary>
            /// The integer identifier for media's recycle bin.
            /// </summary>
            public const int RecycleBinMedia = -21;

            /// <summary>
            /// The string identifier for media's recycle bin.
            /// </summary>
            /// <remarks>Use this instead of re-creating the string everywhere.</remarks>
            public const string RecycleBinMediaString = "-21";

            /// <summary>
            /// The string path prefix of the media's recycle bin.
            /// </summary>
            /// <remarks>
            /// <para>Everything that is in the media recycle bin, has a path that starts with the prefix.</para>
            /// <para>Use this instead of re-creating the string everywhere.</para>
            /// </remarks>
            public const string RecycleBinMediaPathPrefix = "-1,-21,";

            public const int DefaultLabelDataTypeId = -92;
            public const string UmbracoConnectionName = "umbracoDbDSN";
            public const string UmbracoUpgradePlanName = "Umbraco.Core";
        }
    }
}