Efforts should be redirected to:

https://github.com/cincuranet/FirebirdSql.Data.FirebirdClient

EntityFrameworkCore.FirebirdSql for Firebird Server

Provider	Package name	Stable (master branch)	On test (dev branch)
Firebird SQL	EntityFrameworkCore.FirebirdSql

The EntityFrameworkCore.FirebirdSql is an Entity Framework Core access provider for Firebird SQL, compatible with version 3.X and earlier versions 2.x.

Same uses the ADO.NET Library Firebird Client written by friend Cincura.

What we already have:

All basic operations are working well

Insert ✔️ Update ✔️ Delete ✔️

Insert Bulk ✔️ Update Bulk ✔️ Delete Bulk ✔️

Includes ✔️ Complex Querys ✔️

Supports:

Guid, TimeStamp, Date, BigInt, Varchar, Text

IDENTITY INCREMENT FOR FIREBIRD 3.X And 4.0 (Alpha)

Example of use DBContext

//DataContext
public class BlogContext : DbContext
{
       
       public DbSet<Blog> Blog { get; set; }
       public DbSet<Post> Posts { get; set; }
       protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
       { 
           string connectionString = "...";
           optionsBuilder.UseFirebird(connectionString);   
       }
       protected override void OnModelCreating(ModelBuilder modelo)
       {
           //Fluent Api
           modelo.Entity<Blog>(entity =>
           {
               entity.HasIndex(e => e.BlogId)
                   .HasName("Id")
                   .IsUnique();
           });
       }
   }

   public class Blog
   {
       public int BlogId { get; set; }
       public string Url { get; set; } 
       public List<Post> Posts { get; set; }
   }
   public class Post
   {
       public int PostId { get; set; }
       public string Title { get; set; }
       public string Content { get; set; }

       public int BlogId { get; set; }
       public Blog Blog { get; set; }
   }
}     

Example of use add

//Sample Use
 var cx = new BlogContext();  
 
 //one
 cx.Blog.Add(new Blog
 {
     Url = "https://github.com/ralmsdeveloper/EntityFrameworkCore.FirebirdSql"
 });
 cx.SaveChanges();
 
 //Range
 var RangeBlog = new List<Blog>
 {
      new Blog{ Url="https://github.com/ralmsdeveloper/EntityFrameworkCore.FirebirdSql"  },
      new Blog{ Url="https://github.com/ralmsdeveloper/"  },
      new Blog{ Url="https://blog.ralms.net"  },
      new Blog{ Url="https://ralms.net"  } 
 };
 cx.Blog.AddRange(RangeBlog);
 cx.SaveChanges();

Example of use update

//Sample Use
 var cx = new BlogContext();  
  
 var blog = cx.Blog.Find(1);
 cx.Attach(blog);
 blog.Url = "www.ralms.net";
 cx.SaveChanges(); 

Example of use delete

//Sample Use
 var cx = new BlogContext();  
  
 var blog = cx.Blog.Find(1);
 cx.Delete(blog); 
 cx.SaveChanges(); 

Example of use where

//Sample Use
 var cx = new BlogContext();  
  
 var blogs = cx.Blog.Where(p => p.BlogId > 0).ToList();