diff --git a/Assignment2_codes_revised.sql b/Assignment2_codes_revised.sql
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+use omila405;
+#Q1:
+select * from jbemployee;
+#Q2:
+select name from jbdept order by name asc ;
+#Q3:
+SELECT * FROM jbitem where qoh=0;
+#Q4:
+select * from jbemployee where salary between 9000 and 10000;
+#Q5:
+select name,startyear-birthyear AS 'Age'from jbemployee;
+
+#Q6:
+select * from jbemployee where name regexp 'son,';
+#Q7:
+select * from jbitem where supplier = (select id from jbsupplier where name='Fisher-Price');
+#Q8:
+select jbitem.*, jbsupplier.name as supplierName  from jbitem 
+join jbsupplier on jbitem.supplier=jbsupplier.id
+where jbsupplier.name="Fisher-Price";
+#Q9:
+select city.id,city.name,sup.city from jbsupplier sup left join jbcity city on city.id=sup.city;
+#Q10:
+select name,color from jbparts where weight >(select weight from jbparts where name='card reader');
+#Q11:
+select p1.name,p1.color,p1.weight from jbparts p1 join jbparts p2 on p2.name='card reader' where p1.weight>p2.weight;
+#Q12:
+select AVG(weight) from jbparts where color='black';
+    
+#13 update 
+select jbsupplier.name, jbcity.state ,jbparts.name as Parts_name, SUM(jbsupply.part) as total_parts, SUM(jbsupply.quan) as total_quantity,(SUM(jbsupply.part)*SUM(jbsupply.quan)) as Weight  from jbsupplier 
+join jbcity on jbcity.id=jbsupplier.city
+join jbsupply on jbsupply.supplier=jbsupplier.id
+join jbparts on jbsupply.part=jbparts.id
+where jbcity.state='Mass'
+GROUP   BY jbsupplier.id;
+
+
+    
+
+
+
+#Q14:
+create table jb ( 
+	id int primary	key,
+    name varchar(20),
+    dept int ,
+    price int,
+    qoh int,
+	supplier  int,
+    CONSTRAINT FK_jb_supplier 
+    FOREIGN KEY (supplier) REFERENCES jbsupplier(id),
+	CONSTRAINT FK_jb_dept
+    FOREIGN KEY (dept) REFERENCES jbdept(id))
+     as select * from jbitem where price < (select AVG(price) from jbitem);
+    
+    
+#Q15:
+create view item_copy_view as
+	select * from jbitem where price < (select AVG(price) from jbitem) ;
+#Q16:view is an virtial table and saves in views. It doesn't have rows(tuples) and columns(attributes) like tables.
+#View depends on tables so it is dynamic, table is independant and static.
+#Refrence:https://pediaa.com
+
+#Q17:
+create view view2 as
+	select jbdebit.id,(jbsale.item*jbsale.quantity) as total_cost from jbdebit left join jbsale on jbdebit.id=jbsale.debit;
+
+#Q18:
+select debit , (jbsale.quantity*jbitem.price) as total from jbsale join jbitem on jbsale.item=jbitem.id;
+#Q19:
+SET SQL_SAFE_UPDATES = 0;
+SET FOREIGN_KEY_CHECKS=0; -- to disable them
+ DELETE jbsupplier
+from jbsupplier 
+INNER JOIN jbcity on jbsupplier.city = jbcity.id
+where jbcity.name="Los Angeles";
+SET FOREIGN_KEY_CHECKS=1; -- to re-enable them
+SET SQL_SAFE_UPDATES = 1;
+
+#Q20:
+CREATE VIEW jbsale_supply(supplier, item, quantity) AS
+SELECT jbsupplier.name, jbitem.name, jbsale.quantity
+ FROM jbsupplier left join jbitem on jbsupplier.id=jbitem.supplier 
+join jbsale on jbitem.id=jbsale.item;
+SELECT supplier, sum(quantity) AS sum FROM jbsale_supply
+GROUP BY supplier;
+