tiny server.

Server/Data/FlowerDatabase.cs

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+using Blahblah.FlowerStory.Server.Data.Model;
+using Microsoft.EntityFrameworkCore;
+
+namespace Blahblah.FlowerStory.Server.Data;
+
+public class FlowerDatabase : DbContext
+{
+    public FlowerDatabase(DbContextOptions<FlowerDatabase> options) : base(options) { }
+
+    public DbSet<UserItem> Users { get; set; }
+
+    public DbSet<FlowerItem> Flowers { get; set; }
+
+    public DbSet<RecordItem> Records { get; set; }
+}

Server/Data/Model/FlowerItem.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Blahblah.FlowerStory.Server.Data.Model;
+
+[Table("flowers")]
+public class FlowerItem
+{
+    [Column("fid"), Key, Required]
+    public int Id { get; set; }
+
+    [Column("categoryid"), Required]
+    public int CategoryId { get; set; }
+
+    [Column("name"), Required]
+    public required string Name { get; set; }
+
+    [Column("datebuy"), Required]
+    public long DateBuyUnixTime { get; set; }
+
+    [Column("cost", TypeName = "real")]
+    public decimal? Cost { get; set; }
+
+    [Column("purchase")]
+    public string? Purchase { get; set; }
+
+    [Column("photo")]
+    public byte[]? Photo { get; set; }
+
+    [NotMapped]
+    public DateTimeOffset DateBuy => DateTimeOffset.FromUnixTimeMilliseconds(DateBuyUnixTime);
+}

Server/Data/Model/RecordItem.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Blahblah.FlowerStory.Server.Data.Model;
+
+[Table("records")]
+public class RecordItem
+{
+    [Column("rid"), Key, Required]
+    public int Id { get; set; }
+
+    [Column("eid"), Required]
+    public int EventId { get; set; }
+
+    [Column("date"), Required]
+    public long DateUnixTime { get; set; }
+
+    [Column("byuid")]
+    public int? ByUserId { get; set; }
+
+    [Column("byname")]
+    public string? ByUserName { get; set; }
+
+    [Column("photo")]
+    public byte[]? Photo { get; set; }
+
+    [NotMapped]
+    public DateTimeOffset Date => DateTimeOffset.FromUnixTimeMilliseconds(DateUnixTime);
+}

Server/Data/Model/UserItem.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Blahblah.FlowerStory.Server.Data.Model;
+
+[Table("users")]
+public class UserItem
+{
+    [Column("uid"), Key, Required]
+    public int Id { get; set; }
+    [Column("id"), Required]
+    public required string UserId { get; set; }
+    [Column("password"), Required]
+    public required string Password { get; set; }
+    [Column("level"), Required]
+    public int Level { get; set; }
+    [Column("regdate"), Required]
+    public long RegisterDateUnixTime { get; set; }
+    [Column("activedate")]
+    public long? ActiveDateUnixTime { get; set; }
+    [Column("name"), Required]
+    public required string Name { get; set; }
+    [Column("email")]
+    public string? Email { get; set; }
+    [Column("mobile")]
+    public string? Mobile { get; set; }
+
+    [NotMapped]
+    public DateTimeOffset RegisterDate => DateTimeOffset.FromUnixTimeMilliseconds(RegisterDateUnixTime);
+    [NotMapped]
+    public DateTimeOffset? ActiveDate => ActiveDateUnixTime == null ? null : DateTimeOffset.FromUnixTimeMilliseconds(ActiveDateUnixTime.Value);
+}