diff --git a/CourseApp.Tests/UnitTest5_DateTime.cs b/CourseApp.Tests/UnitTest5_DateTime.cs
new file mode 100644
index 0000000..48ed3ca
--- /dev/null
+++ b/CourseApp.Tests/UnitTest5_DateTime.cs
@@ -0,0 +1,33 @@
+using System;
+using Xunit;
+
+using ConsoleApp1;
+
+namespace CourseApp.Tests
+{
+    public class UnitTest5_DateTime
+    {
+        private readonly Date td = new Date();
+
+        [Fact]
+        public void Test_data_2000_01_01()
+        {
+            DateTime bd = new DateTime(2000, 1, 1);
+            Assert.Equal(@"Year: 19  Month: 02  Day: 01 ", td.Vozrast(bd));
+        }
+
+        [Fact]
+        public void Test_data_1980_05_15()
+        {
+            DateTime bd = new DateTime(1980, 5, 15);
+            Assert.Equal(@"Year: 38  Month: 09  Day: 17 ", td.Vozrast(bd));
+        }
+
+        [Fact]
+        public void Test_data_1919_08_16()
+        {
+            DateTime bd = new DateTime(1919, 8, 16);
+            Assert.Equal(@"Year: 99  Month: 06  Day: 16 ", td.Vozrast(bd));
+        }
+    }
+}
diff --git a/CourseApp/Date.cs b/CourseApp/Date.cs
new file mode 100644
index 0000000..8113115
--- /dev/null
+++ b/CourseApp/Date.cs
@@ -0,0 +1,16 @@
+using System;
+
+namespace ConsoleApp1
+{
+    public class Date
+    {
+        public string Vozrast(DateTime bd)
+        {
+            DateTime today = new DateTime(2019, 3, 2);
+            today = today.AddYears(-bd.Year);
+            today = today.AddMonths(-bd.Month);
+            today = today.AddDays(-bd.Day);
+            return today.ToString(@"\Year: yy  \Mon\t\h: MM  \Da\y: dd ");
+        }
+    }
+}
\ No newline at end of file
diff --git a/CourseApp/Program.cs b/CourseApp/Program.cs
index 7bb62eb..92e1ff2 100644
--- a/CourseApp/Program.cs
+++ b/CourseApp/Program.cs
@@ -61,6 +61,9 @@ private static void Main()
                 l.GetInfo();
             }
 
+            Date td = new Date();
+            DateTime bd = new DateTime(1999, 18, 8);
+            Console.WriteLine("vozrast = {bd.Vozrast(bd)}");
             Console.Read();
         }
 
diff --git a/mihalks.github.io b/mihalks.github.io
new file mode 160000
index 0000000..38f4ead
--- /dev/null
+++ b/mihalks.github.io
@@ -0,0 +1 @@
+Subproject commit 38f4ead32cf6f003f8a9b4356c78c371901a45b6
diff --git a/sql/sql.txt b/sql/sql.txt
new file mode 100644
index 0000000..e3975b1
--- /dev/null
+++ b/sql/sql.txt
@@ -0,0 +1,9 @@
+1)select title from Movie where director ="Steven Spielberg";
+2)select distinct year from Rating, Movie where stars >= 4 and Movie.mID=Rating.mID order by year;
+3)select title from Movie where Movie.mID not in (select Rating.mID from Rating);
+4)select name from Reviewer, Rating where Reviewer.rID=Rating.rID and Rating.ratingDate is null;
+5)select distinct Reviewer.name, Movie.title, Rating.stars, Rating.ratingDate from (Movie join Rating) join Reviewer on Rating.mID=Movie.mID and Rating.rID=Reviewer.rID order by Reviewer.name, Movie.title, Rating.stars;
+6)select distinct Reviewer.name, Movie.title from Movie, Reviewer, Rating R1,Rating R2 where R1.rID=Reviewer.rID and Movie.mID=R1.mID and R1.stars>R2.stars and R1.ratingDate > R2.ratingDate and (R1.rID=R2.rId and R1.ratingDate <> R2.ratingDate) and R1.ratingDate is not null and R2.ratingDate is not null and (R1.mID = R2.mId and R1.ratingDate <>R2.ratingDate);
+7)select title, max(stars) from Rating, Movie where Rating.mID = Movie.mID group by Rating.mID;
+8)select distinct title, avg(stars) from Movie, Rating where Movie.mID = Rating.mID group by title order by avg(stars) desc;
+9)select distinct name from Rating, Reviewer where Rating.rID = Reviewer.rID and stars >= 3;
\ No newline at end of file