namespace System.Data
{
    [DefaultEvent("CollectionChanged")]
    [DefaultMember("Item")]
    [DefaultProperty("Table")]
    [Editor("Microsoft.VSDesigner.Data.Design.DataRelationCollectionEditor, Microsoft.VSDesigner, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
    public abstract class DataRelationCollection : InternalDataCollectionBase
    {
        public virtual bool Contains(string? name);
    }
}