public class Operation : BaseEntity
    {
        public int ProductId { get; set; }
        public string Detail { get; set; }
        public string Description { get; set; }
        public string Number { get; set; }
        public int EquipmentId { get; set; }
        public int UnitId { get; set; }
    }

public class Program: BaseEntity
    {
        public int OperationId { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public int ActId { get; set; }
        public DateTime Created { get; set; }
        public int CreatorId { get; set; }
    }

public class Acts: BaseEntity
    {
        public string Number { get; set; }
        public bool IsPublish { get; set; }
        public bool IsArchive { get; set; }
    }

public interface IRepository<T> where T: class
    {
        /// <summary>
        /// Get entity by identifier
        /// </summary>
        /// <param name="id">Identifier</param>
        /// <returns>Entity</returns>
        T GetById(object id);

        /// <summary>
        /// Insert entity
        /// </summary>
        /// <param name="entity">Entity</param>
        void Insert(T entity);

        /// <summary>
        /// Insert entities
        /// </summary>
        /// <param name="entities">Entities</param>
        void Insert(IEnumerable<T> entities);

        /// <summary>
        /// Update entity
        /// </summary>
        /// <param name="entity">Entity</param>
        void Update(T entity);

        /// <summary>
        /// Delete entity
        /// </summary>
        /// <param name="entity">Entity</param>
        void Delete(T entity);

        /// <summary>
        /// Delete entities
        /// </summary>
        /// <param name="entities">Entities</param>
        void Delete(IEnumerable<T> entities);

        /// <summary>
        /// Gets a table
        /// </summary>
        IQueryable<T> Table { get; }
    }

private IOperationService _operationService = new OperationService();

public class Operation
{
        public int Id {get;set;}
        public string Name {get;set;}
        public string UnitFullName {get;set;}
        //другие поля

        public virtual ICollection<Program> ProgramList {get;set;}
}

public class Program
{
        public int Id {get;set;}
        public int OperationId {get;set;}
        public string Name {get;set;}
        public string Description {get;set;}

        public virtual Operation Operation {get;set;}
}

public class OperationListModel
    {
        public int Id { get; set; }
        [Display(Name = "Изделие")]
        public string ProductName { get; set; }
        [Display(Name = "Обозначение техпроцесса")]
        public string Detail { get; set; }
        [Display(Name = "Наименование")]
        public string Description { get; set; }
        [Display(Name = "№ оп.")]
        public string Number { get; set; }
        [Display(Name = "Оборудование")]
        public string EquipmentName { get; set; }
        [Display(Name = "Подразделение")]
        public string UnitFullName { get; set; }
    }