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Prefab/Data/Configs/AuditLogConfig.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Prefab.Data.Entities;
+
+namespace Prefab.Data.Configs
+{
+    /// <summary>
+    /// Entity Framework Core configuration for the <see cref="AuditLog"/> entity.
+    /// </summary>
+    public class AuditLogConfig() : Prefab.Data.Configs.EntityConfig<AuditLog>(nameof(IPrefabDb.AuditLogs))
+    {
+        /// <summary>
+        /// Configures the properties and relationships for the <see cref="AuditLog"/> entity.
+        /// </summary>
+        /// <param name="builder">The builder to be used to configure the entity type.</param>
+        public override void Configure(EntityTypeBuilder<AuditLog> builder)
+        {
+            builder.HasKey(e => e.Id);
+
+            builder.Property(e => e.Entity)
+                .HasMaxLength(Rules.EntityMaxLength)
+                .IsRequired();
+
+            builder.Property(e => e.State)
+                .IsRequired();
+
+            builder.Property(e => e.CreatedBy)
+                .IsRequired();
+
+            builder.Property(e => e.CreatedOn)
+                .IsRequired();
+
+            builder.HasMany(e => e.Items)
+                .WithOne(i => i.AuditLog)
+                .HasForeignKey(i => i.AuditLogId)
+                .OnDelete(DeleteBehavior.Cascade);
+        }
+
+        /// <summary>
+        /// Validation rules and settings for <see cref="AuditLog"/> properties.
+        /// </summary>
+        public static class Rules
+        {
+            /// <summary>Maximum length for the Entity name.</summary>
+            public const int EntityMaxLength = 200;
+        }
+    }
+}

Prefab/Data/Configs/AuditLogItemConfig.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Prefab.Data.Entities;
+
+namespace Prefab.Data.Configs
+{
+    /// <summary>
+    /// Entity Framework Core configuration for the <see cref="AuditLogItem"/> entity.
+    /// </summary>
+    public class AuditLogItemConfig() : Prefab.Data.Configs.EntityConfig<AuditLogItem>(nameof(IPrefabDb.AuditLogItems))
+    {
+        /// <summary>
+        /// Configures the properties and relationships for the <see cref="AuditLogItem"/> entity.
+        /// </summary>
+        /// <param name="builder">The builder to be used to configure the entity type.</param>
+        public override void Configure(EntityTypeBuilder<AuditLogItem> builder)
+        {
+            builder.HasKey(e => e.Id);
+
+            builder.Property(e => e.Property)
+                .HasMaxLength(Rules.PropertyMaxLength)
+                .IsRequired();
+
+            builder.Property(e => e.OldValue)
+                .HasMaxLength(Rules.ValueMaxLength);
+
+            builder.Property(e => e.NewValue)
+                .HasMaxLength(Rules.ValueMaxLength);
+
+            builder.HasOne(e => e.AuditLog)
+                .WithMany(a => a.Items)
+                .HasForeignKey(e => e.AuditLogId)
+                .OnDelete(DeleteBehavior.Cascade);
+        }
+
+        /// <summary>
+        /// Validation rules and settings for <see cref="AuditLogItem"/> properties.
+        /// </summary>
+        public static class Rules
+        {
+            /// <summary>Maximum length for the property name.</summary>
+            public const int PropertyMaxLength = 100;
+            /// <summary>Maximum length for the value fields.</summary>
+            public const int ValueMaxLength = 1000;
+        }
+    }
+}
+

Prefab/Data/Configs/EntityConfig.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Prefab.Data.Configs
+{
+    /// <summary>
+    /// Base configuration for all entities, sets items like table name and schema.
+    /// </summary>
+    /// <typeparam name="T">The entity type.</typeparam>
+    public abstract class EntityConfig<T> : IEntityTypeConfiguration<T> where T : class
+    {
+        private readonly string _schema;
+        private readonly string _tableName;
+
+        protected EntityConfig(string tableName, string? schema = null)
+        {
+            ArgumentException.ThrowIfNullOrWhiteSpace(tableName);
+            _tableName = tableName;
+            _schema = string.IsNullOrWhiteSpace(schema) ? "dbo" : schema;
+        }
+
+        public virtual void Configure(EntityTypeBuilder<T> builder)
+        {
+            builder.ToTable(_tableName, _schema);
+        }
+    }
+}

Prefab/Data/Configs/GenericAttributeConfig.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Prefab.Data.Entities;
+
+namespace Prefab.Data.Configs;
+
+/// <summary>
+/// Configuration class for the <see cref="GenericAttribute"/> entity within the dbo schema.
+/// </summary>
+public class GenericAttributeConfig() : EntityConfig<GenericAttribute>(nameof(IPrefabDb.GenericAttributes)) 
+{
+    /// <summary>
+    /// Configuration of Entity Framework mapping for the <see cref="GenericAttribute"/> entity.
+    /// </summary>
+    public override void Configure(EntityTypeBuilder<GenericAttribute> builder)
+    {
+        builder
+            .Ignore(x => x.Id);
+
+        // Define the composite key (and clustered index) for the GenericAttribute entity.
+        builder
+            .HasKey(x => new { x.EntityId, x.KeyGroup, x.Key });
+
+        builder.HasIndex(x => new { x.EntityId, x.KeyGroup })
+            .HasDatabaseName("IX_GenericAttributes_Entity_Group");
+
+        builder.HasIndex(x => x.DeletedOn)
+            .HasFilter("[DeletedOn] IS NULL")
+            .HasDatabaseName("IX_GenericAttributes_Active");
+        
+        builder
+            .Property(x => x.KeyGroup)
+            .HasMaxLength(Rules.KeyGroupMaxLength)
+            .IsRequired();
+
+        builder
+            .Property(x => x.Key)
+            .HasMaxLength(Rules.KeyMaxLength)
+            .IsRequired();
+
+        builder
+            .Property(x => x.Value)
+            .HasMaxLength(Rules.ValueMaxLength)
+            .IsRequired();
+    }
+    
+    /// <summary>
+    /// Validation rules for the <see cref="GenericAttribute"/> entity.
+    /// </summary>
+    public static class Rules
+    {
+        /// <summary>
+        /// Maximum length to set for the generic attribute key group.
+        /// </summary>
+        public const int KeyGroupMaxLength = 400;
+
+        /// <summary>
+        /// Minimum length to set for the generic attribute key.
+        /// </summary>
+        public const int KeyMinLength = 3;
+
+        /// <summary>
+        /// Maximum length to set for the generic attribute key.
+        /// </summary>
+        public const int KeyMaxLength = 400;
+
+        /// <summary>
+        /// Maximum length to set for the generic attribute value.
+        /// </summary>
+        public const int ValueMaxLength = int.MaxValue;
+    }
+}

Prefab/Data/Configs/SeederLogConfig.cs

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+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Prefab.Data.Entities;
+
+namespace Prefab.Data.Configs;
+
+/// <summary>
+/// Configuration class for the <see cref="SeederLog"/> entity.
+/// </summary>
+public class SeederLogConfig() : Prefab.Data.Configs.EntityConfig<SeederLog>(nameof(IPrefabDb.SeederLogs))
+{
+    /// <summary>
+    /// Configuration of Entity Framework mapping for the <see cref="SeederLog"/> entity.
+    /// </summary>
+    public override void Configure(EntityTypeBuilder<SeederLog> builder)
+    {
+        ArgumentNullException.ThrowIfNull(builder);
+
+        builder
+            .HasKey(x => x.Id);
+        
+        builder
+            .Property(x => x.Id)
+            .ValueGeneratedOnAdd();
+        
+        builder.Property(x => x.SeederName)
+            .HasMaxLength(Rules.SeederNameMaxLength)
+            .IsRequired();
+        
+        builder.Property(x => x.RunMode)
+            .HasMaxLength(Rules.SeederRunModeMaxLength)
+            .IsRequired();
+        
+        builder
+            .Property(x => x.RunAt)
+            .IsRequired();
+    }
+
+    /// <summary>
+    /// Validation rules for the <see cref="SeederLog"/> entity.
+    /// </summary>
+    public static class Rules
+    {
+        /// <summary>
+        /// Maximum length to set for the seeder name.
+        /// </summary>
+        public const int SeederNameMaxLength = 256;
+        
+        /// <summary>
+        /// Maximum length to set for the seeder name.
+        /// </summary>
+        public const int SeederRunModeMaxLength = 64;
+    }
+}