public SqlStudentData(GetAppDbContext db) { this.db = db; }
public SqlSubjectData(GetAppDbContext db) { this.db = db; }
public SqlExamData(GetAppDbContext db) { this.db = db; }
public SqlStudentData(GetAppDbContext db) { this.db = db; }
public SqlSubjectData(GetAppDbContext db) { this.db = db; }
public SqlExamData(GetAppDbContext db) { this.db = db; }