Adds Database Structure in C# with Entity Framework

WatchLog/Data/Database/Private/Label.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace WatchLog.Data
+{
+    public class Label
+    {
+        [Key]
+        public int Id { get; set; }
+
+        [Required]
+        [MaxLength(50)]
+        public required string Name { get; set; }
+
+        [Required]
+        public required DateTime CreationTime { get; set; }
+
+        public DateTime? LastChange { get; set; }
+
+
+        // --- Foreign Key ---
+        [Required]
+        public int CreatorId { get; set; }
+
+
+        // --- Navigation Properties ---
+        [ForeignKey(nameof(CreatorId))]
+        public virtual User User { get; set; } = null!;
+
+        public virtual ICollection<LinkTablePrivateLabel> LinkTablePrivateLabels { get; set; } = new List<LinkTablePrivateLabel>();
+    }
+}

WatchLog/Data/Database/Private/LinkTablePrivateLabel.cs

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+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
+
+namespace WatchLog.Data
+{
+    [PrimaryKey(nameof(PrivateEntityId), nameof(LabelId))]
+    public class LinkTablePrivateLabel
+    {
+        // --- Foreign Keys ---
+        public int PrivateEntityId { get; set; }
+        public int LabelId { get; set; }
+
+
+        // --- Navigation Properties ---
+        [ForeignKey(nameof(PrivateEntityId))]
+        public virtual PrivateEntity PrivateEntity { get; set; } = null!;
+
+        [ForeignKey(nameof(LabelId))]
+        public virtual Label Label { get; set; } = null!;
+    }
+}

WatchLog/Data/Database/Private/LinkTablePrivateStreamingPlatform.cs

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+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
+
+namespace WatchLog.Data
+{
+    [PrimaryKey(nameof(PrivateEntityId), nameof(StreamingPlatformId))]
+    public class LinkTablePrivateStreamingPlatform
+    {
+        // --- Foreign Keys ---
+        public int PrivateEntityId { get; set; }
+        public int StreamingPlatformId { get; set; }
+
+
+        // --- Navigation Properties ---
+        [ForeignKey(nameof(PrivateEntityId))]
+        public virtual PrivateEntity PrivateEntity { get; set; } = null!;
+
+        [ForeignKey(nameof(StreamingPlatformId))]
+        public virtual StreamingPlatform StreamingPlatform { get; set; } = null!;
+    }
+}

WatchLog/Data/Database/Private/PrivateEntity.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace WatchLog.Data
+{
+    public class PrivateEntity
+    {
+        [Key]
+        public int Id { get; set; }
+
+        public bool Favorite { get; set; } = false;
+
+        [MaxLength(1000)]
+        public string? Description { get; set; }
+
+        public int? Season { get; set; }
+
+        public int? Episode { get; set; }
+
+        public int? Rating { get; set; }
+
+        [Required]
+        public required DateTime CreationTime { get; set; }
+
+        public DateTime? LastChange { get; set; }
+
+
+        // --- Foreign Keys ---
+        [Required]
+        public int UserId { get; set; }
+
+        [Required]
+        public int GlobalEntityId { get; set; }
+
+        public int? UserWatchStatusId { get; set; }
+
+
+        // --- Navigation Properties ---
+        [ForeignKey(nameof(UserId))]
+        public virtual User User { get; set; } = null!;
+
+        [ForeignKey(nameof(GlobalEntityId))]
+        public virtual GlobalEntity GlobalEntity { get; set; } = null!;
+
+        [ForeignKey(nameof(UserWatchStatusId))]
+        public virtual UserWatchStatus? UserWatchStatus { get; set; }
+
+        public virtual ICollection<LinkTablePrivateLabel> PrivateEntityLabels { get; set; } = new List<LinkTablePrivateLabel>();
+
+        public virtual ICollection<LinkTablePrivateStreamingPlatform> PrivateStreamingPlatforms { get; set; } = new List<LinkTablePrivateStreamingPlatform>();
+    }
+}

WatchLog/Data/Database/Private/UserWatchStatus.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace WatchLog.Data
+{
+    public class UserWatchStatus
+    {
+        [Key]
+        public int Id { get; set; }
+
+        [Required]
+        [MaxLength(50)]
+        public required string Name { get; set; }
+
+        [MaxLength(255)]
+        public string? Description { get; set; }
+
+        [MaxLength(7)]
+        public string? ColorCode { get; set; }
+
+        [Required]
+        public required DateTime CreationTime { get; set; }
+
+        public DateTime? LastChange { get; set; }
+
+
+        // --- Foreign Key ---
+        [Required]
+        public int UserId { get; set; }
+
+
+        // --- Navigation Properties ---
+        [ForeignKey(nameof(UserId))]
+        public virtual User User { get; set; } = null!;
+
+        public virtual ICollection<PrivateEntity> PrivateEntities { get; set; } = new List<PrivateEntity>();
+    }
+}