understood my mistake and created DataContext.cs with new name lol

SurveyLib.Infrastructure.EFCore/Data/SurveyDbContext.cs

@@ -0,0 +1,17 @@
+using Microsoft.EntityFrameworkCore;
+using SurveyLib.Core.Models;
+
+namespace SurveyLib.Infrastructure.EFCore.Data;
+
+public class SurveyDbContext : DbContext
+{
+    public DbSet<Survey> Surveys { get; set; }
+    public DbSet<QuestionBase> Questions { get; set; }
+    public DbSet<Completion> Completions { get; set; }
+    public DbSet<Answer> Answers { get; set; }
+
+    public SurveyDbContext(DbContextOptions<SurveyDbContext> options) : base(options)
+    {
+        
+    }
+}

SurveyLib.Infrastructure.EFCore/Repositories/AnswerRepository.cs

@@ -7,9 +7,9 @@ namespace SurveyLib.Infrastructure.EFCore.Repositories;
 
 public class AnswerRepository : IAnswerRepository
 {
-    private readonly DataContext _context;
+    private readonly SurveyDbContext _context;
 
-    public AnswerRepository(DataContext context)
+    public AnswerRepository(SurveyDbContext context)
     {
         _context = context;
     }

SurveyLib.Infrastructure.EFCore/Repositories/CompletionRepository.cs

@@ -7,9 +7,9 @@ namespace SurveyLib.Infrastructure.EFCore.Repositories;
 
 public class CompletionRepository : ICompletionRepository
 {
-    private readonly DataContext _context;
+    private readonly SurveyDbContext _context;
 
-    public CompletionRepository(DataContext context)
+    public CompletionRepository(SurveyDbContext context)
     {
         _context = context;
     }

SurveyLib.Infrastructure.EFCore/Repositories/QuestionRepository.cs

@@ -7,9 +7,9 @@ namespace SurveyLib.Infrastructure.EFCore.Repositories;
 
 public class QuestionRepository : IQuestionRepository
 {
-    private readonly DataContext _context;
+    private readonly SurveyDbContext _context;
 
-    public QuestionRepository(DataContext context)
+    public QuestionRepository(SurveyDbContext context)
     {
         _context = context;
     }

SurveyLib.Infrastructure.EFCore/Repositories/SurveyRepository.cs

@@ -7,9 +7,9 @@ namespace SurveyLib.Infrastructure.EFCore.Repositories;
 
 public class SurveyRepository : ISurveyRepository
 {
-    private readonly DataContext _context;
+    private readonly SurveyDbContext _context;
 
-    public SurveyRepository(DataContext context)
+    public SurveyRepository(SurveyDbContext context)
     {
         _context = context;
     }