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{{db-g7}}
This page is to efficiently manage our group assignments!
 
== Member List ==
 
*[mailto:yjeong@learn.senecac.on.ca,?subject=dbs501,symoon@learn.senecac.on.ca,?subject=dbs501,lzhou@learn.senecac.on.ca,?subject=dbs501 Email All]
 
 
 
{| class="wikitable sortable" border="1" cellpadding="5"
 
! First Name !! Last Name !! Student ID !! Learn e-mail  !! Phone
 
|-
 
|YuJin ||Jeong|| 048 - 056 - 097 ||[mailto:yjeong@learn.senecac.on.ca?sujbect=dbs501 yjeong]|| (647) 863 - 5555
 
|-
 
 
 
|-
 
|Seung Yeon||Moon || - ||[mailto:symoon@learn.senecac.on.ca?subject=dbs501 symoon] ||(647) 678 - 6511
 
|-
 
 
 
|-
 
|Li Shi|| Zhou || 057 - 268 - 070 || [mailto:lzhou@learn.senecac.on.ca?subject=dbs501 lzhou] || (416) 887 - 6758
 
|-
 
|}
 
 
 
=Assignment 1 (worth 10%)=
 
 
 
 
 
==Due Date==
 
Friday, October 24st, 4:00pm
 
 
 
==Description==
 
[https://cs.senecac.on.ca/~nconkic/as1.doc Assignment1]
 
Submit PRINTOUT and EMAIL with ATTACHMENT
 
 
 
==Solution==
 
 
 
 
 
===1.===
 
''YuJin''
 
<pre>
 
SET SERVEROUTPUT ON
 
SET VERIFY OFF
 
ACCEPT country_code PROMPT 'Enter value for country: '
 
VARIABLE b_loc_id NUMBER
 
DECLARE
 
    v_country_code    COUNTRIES.country_id%TYPE := '&country_code'; 
 
    v_city            LOCATIONS.city%TYPE;
 
    v_city_letter    CHAR(1);
 
    v_street          LOCATIONS.street_address%TYPE;
 
    v_street_len      NUMBER;
 
    v_state_province  LOCATIONS.state_province%TYPE := ' ';
 
BEGIN
 
    SELECT location_id, street_address, city INTO :b_loc_id, v_street, v_city
 
    FROM  LOCATIONS
 
    WHERE  country_id = v_country_code
 
    AND    state_province IS NULL;
 
 
 
    v_street_len  := LENGTH(v_street);
 
    v_city_letter := SUBSTR(UPPER(v_city), 1, 1);
 
 
 
    IF v_city_letter IN ('A', 'B', 'C', 'F') THEN
 
v_state_province := RPAD(v_state_province, v_street_len, '*');
 
    ELSIF v_city_letter IN ('C', 'D', 'G', 'H') THEN
 
v_state_province := RPAD(v_state_province, v_street_len, '&');
 
    ELSE
 
v_state_province := RPAD(v_state_province, v_street_len, '#');
 
    END IF;
 
 
 
    UPDATE LOCATIONS
 
    SET    state_province = v_state_province
 
    WHERE  location_id = :b_loc_id;
 
 
 
    DBMS_OUTPUT.PUT_LINE('City ' || v_city || ' has modified its province to ' || v_state_province);
 
 
 
    EXCEPTION
 
WHEN NO_DATA_FOUND THEN
 
    DBMS_OUTPUT.PUT_LINE('This country has NO cities listed.');
 
WHEN TOO_MANY_ROWS THEN
 
    DBMS_OUTPUT.PUT_LINE('City ' || v_city || 'has MORE THAN ONE City without province listed.');
 
END;
 
/
 
 
 
SELECT *
 
FROM  LOCATIONS
 
WHERE  location_id = :b_loc_id;
 
 
 
ROLLBACK;
 
</pre>
 
''Seung Yeon''
 
<pre>
 
SELECT department_id, department_name, SUBSTR(NVL(city,'Not Assigned Yet'),1,25) City,
 
        COUNT(DISTINCT job_id) "# of Jobs"
 
FROM locations l RIGHT OUTER JOIN departments d
 
USING (location_id)
 
LEFT OUTER JOIN employees e
 
USING (department_id)
 
GROUP BY  department_id, department_name, city
 
/
 
</pre>
 
''Li Shi''
 
<pre>
 
select department_id, department_name, substr(nvl(city,'Not Assigned Yet'),1,25) City,
 
count(distinct job_id) "# of Jobs"
 
from employees right outer join departments
 
using (department_id)
 
left outer join locations
 
using (location_id)
 
group by department_id, department_name, city
 
</pre>
 
 
 
''FINAL''
 
<pre>
 
SELECT    department_id, department_name,
 
          SUBSTR(NVL(city, 'Not Assinged Yet'),1, 25) "City",
 
          COUNT(DISTINCT job_id) "# of Jobs"
 
FROM      employees
 
RIGHT OUTER JOIN  departments USING (department_id)
 
LEFT  OUTER JOIN  locations  USING (location_id)
 
GROUP BY  department_id, department_name, city;
 
 
 
</pre>
 
 
 
=Assignment 2 (worth 10%)=
 
==Due Date==
 
Friday, December 2nd, X:XXpm
 
 
 
==Description==
 
[https://cs.senecac.on.ca/~nconkic/as2.doc Assignment2]
 
 
 
==Solution==
 

Latest revision as of 14:27, 16 October 2011