Shatha Week8 HW

Q2.txt

@@ -0,0 +1,80 @@
+-- This script was generated by a beta version of the ERD tool in pgAdmin 4.
+-- Please log an issue at https://redmine.postgresql.org/projects/pgadmin4/issues/new if you find any bugs, including reproduction steps.
+BEGIN;
+
+
+CREATE TABLE IF NOT EXISTS public."Customer"
+(
+    cust_id integer NOT NULL,
+    cust_name text COLLATE pg_catalog."default",
+    dom_id integer NOT NULL,
+    CONSTRAINT "Customer_pkey" PRIMARY KEY (cust_id)
+);
+
+CREATE TABLE IF NOT EXISTS public."Domain"
+(
+    dom_id integer NOT NULL,
+    dom_name text COLLATE pg_catalog."default",
+    CONSTRAINT "Domain_pkey" PRIMARY KEY (dom_id)
+);
+
+CREATE TABLE IF NOT EXISTS public."Employee"
+(
+    emp_id integer NOT NULL,
+    emp_name text COLLATE pg_catalog."default",
+    title text COLLATE pg_catalog."default",
+    team_id integer NOT NULL,
+    CONSTRAINT "Employee_pkey" PRIMARY KEY (emp_id)
+);
+
+CREATE TABLE IF NOT EXISTS public."Product"
+(
+    prd_id integer NOT NULL,
+    prd_name text COLLATE pg_catalog."default",
+    start_date date,
+    planned_end_date date,
+    acctual_end_date date,
+    team_id integer NOT NULL,
+    cust_id integer NOT NULL,
+    CONSTRAINT "Product_pkey" PRIMARY KEY (prd_id)
+);
+
+CREATE TABLE IF NOT EXISTS public."Team"
+(
+    team_id integer NOT NULL,
+    team_name text COLLATE pg_catalog."default",
+    CONSTRAINT "Team_pkey" PRIMARY KEY (team_id)
+);
+
+ALTER TABLE IF EXISTS public."Customer"
+    ADD FOREIGN KEY (dom_id)
+    REFERENCES public."Domain" (dom_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Employee"
+    ADD FOREIGN KEY (team_id)
+    REFERENCES public."Team" (team_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Product"
+    ADD FOREIGN KEY (team_id)
+    REFERENCES public."Team" (team_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Product"
+    ADD FOREIGN KEY (cust_id)
+    REFERENCES public."Customer" (cust_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+END;

Q4.py

@@ -0,0 +1,26 @@
+import psycopg2
+
+conn = psycopg2.connect(
+    host="localhost",
+    database="W1_Q3_Pagila",
+    user="postgres",
+    password="aiham")
+
+cur = conn.cursor()
+cur.execute('select * from "actor";')
+data = cur.fetchall()
+print(data)
+
+print("-----------------------------------------------------------------------------------------------------------------")
+
+cur = conn.cursor()
+cur.execute('select * from "category";')
+data = cur.fetchone()
+print(data)
+
+print("-----------------------------------------------------------------------------------------------------------------")
+
+cur = conn.cursor()
+cur.execute('select * from "address";')
+data = cur.fetchmany(50)
+print(data)

exercise5.py

@@ -0,0 +1,50 @@
+import psycopg2
+
+conn = psycopg2.connect(
+        host="localhost",
+        database="PyCoders",
+        user="postgres",
+        password="aiham")
+cur = conn.cursor()
+
+cur.execute('CREATE TABLE IF NOT EXISTS public.students(student_id integer NOT NULL,name text );')
+cur.execute('CREATE TABLE IF NOT EXISTS public."teachers"(teacher_id integer NOT NULL,name text );')
+
+insert_q = """ INSERT INTO public.students (student_id, name) VALUES (%s,%s)"""
+insert_v = (1, 'Ali')
+cur.execute(insert_q,insert_v)
+
+insert_q = """ INSERT INTO public.students (student_id, name) VALUES (%s,%s)"""
+insert_v = (2, 'Adham')
+cur.execute(insert_q,insert_v)
+
+insert_q = """ INSERT INTO public.students (student_id, name) VALUES (%s,%s)"""
+insert_v = (3, 'Amal')
+cur.execute(insert_q,insert_v)
+
+
+insert_q = """ INSERT INTO public.teachers (teacher_id, name) VALUES (%s,%s)"""
+insert_v = (1, 'Shatha')
+cur.execute(insert_q,insert_v)
+
+insert_q = """ INSERT INTO public.teachers (teacher_id, name) VALUES (%s,%s)"""
+insert_v = (2, 'Farah')
+cur.execute(insert_q,insert_v)
+
+insert_q = """ INSERT INTO public.teachers (teacher_id, name) VALUES (%s,%s)"""
+insert_v = (3, 'Sam')
+cur.execute(insert_q,insert_v)
+
+cur.execute('select * from "students";')
+data = cur.fetchall()
+print(data)
+
+cur.execute('select * from "teachers";')
+data = cur.fetchall()
+print(data)
+
+cur.close()
+conn.commit()
+conn.close()
+
+