add ldap,python and sql workshops

slides/sql/sql.md

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+# SQL baze podataka
+
+# Tabele
+
+Tabela
+
+![userstable](./slides/sql/table.png)
+
+# Baza
+
+- vise tabela u jednoj bazi
+- pristup preko mreze
+- SQL jezik
+- pozivanje upita iz drugih jezika
+
+# SQL
+
+- SELECT username,password FROM userstable
+- SELECT * FROM userstable
+- SELECT password FROM userstable WHERE username='korisnik1'
+- INSERT INTO userstable (username, password) VALUES (newuser3, pass1)
+
+# Bezbednost
+
+- SQL injection
+- PDO