Update Ch15 exercises

Author: somacdivad

ch15-sql-database-connections/1-use-sqlite.py

@@ -8,26 +8,26 @@
  c = connection.cursor()
 
  # Exercise 1
- # Create a "Roster" table with Name, Species and IQ fields
- c.execute("CREATE TABLE Roster(Name TEXT, Species TEXT, IQ INT)")
+ # Create a "Roster" table with Name, Species and Age fields
+ c.execute("CREATE TABLE Roster(Name TEXT, Species TEXT, Age INT)")
 
  # Exercise 2
  # Add some data into the database
  roster_data = (
- ("Jean-Baptiste Zorg", "Human", 122),
- ("Korben Dallas", "Meat Popsicle", 100),
- ("Ak'not", "Mangalore", -5),
+ ("Benjamin Sisko", "Human", 40),
+ ("Jadzia Dax", "Trill", 300),
+ ("Kira Nerys", "Bajoran", 29),
  )
  c.executemany("INSERT INTO Roster VALUES(?, ?, ?)", roster_data)
 
  # Exercise 3
- # Update the Species of Korben Dallas to "Human"
+ # Update the Name of Jadzia Dax to "Ezri Dax"
  c.execute(
- "UPDATE Roster SET Species=? WHERE Name=?", ("Human", "Korben Dallas")
+ "UPDATE Roster SET Name=? WHERE Name=?", ("Ezri Dax", "Jadzia Dax")
  )
 
  # Exercise 4
- # Display the names and IQs of everyone classified as Human
- c.execute("SELECT Name, IQ FROM Roster WHERE Species = 'Human'")
+ # Display the names and ages of everyone classified as Bajoran
+ c.execute("SELECT Name, Age FROM Roster WHERE Species = 'Bajoran'")
  for row in c.fetchall():
  print(row)