2.1 KiB
2.1 KiB
Lab 4 - OracleDB
Verifying the existence of the previous labs' DB.
SQL> select table_name from user_tables;
TABLE_NAME
--------------------------------------------------------------------------------
ACCIDENT
CAR
OWNS
PARTICIPATED
PERSON
Q1. Find the total number of people who owned cars that were involved in accidents in 2008.
Ans.
Modifying the table to add required entry from 2008.
SQL> select * from accident;
REPORT_NUMBER ACCD_DATE LOCATION
------------- --------- --------------------------------------------------
1 01-JAN-24 Delhi India
3 29-FEB-24 India
5 31-MAR-00 Gujrat India
12 17-JUL-00 karnataka India
10 01-JAN-08 Manipal India
SQL> update accident set ACCD_DATE='01-Jan-2008' where REPORT_NUMBER=1
2 ;
1 row updated.
SQL> select * from accident;
REPORT_NUMBER ACCD_DATE LOCATION
------------- --------- --------------------------------------------------
1 01-JAN-08 Delhi India
3 29-FEB-24 India
5 31-MAR-00 Gujrat India
12 17-JUL-00 karnataka India
10 01-JAN-08 Manipal India
SQL> select count(distinct Driver_ID#) from participated natural join accident where extract(year from accd_date)=2008;
COUNT(DISTINCTDRIVER_ID#)
-------------------------
1
Q2. Find the number of accidents in which cars belonging to a specific model were involved.
SQL> select * from car;
REGNO MODEL YEAR
-------------------- ------------------------------ ----------
ABCD0001 Celtos 3
EFGH2001 Ferrari 32
DSDS0001 Urus 5
ABCD4001 Honda City 1
HFSP5601 mini cooper 7
SQL> select count(distinct driver_id#) from car natural join participated where model like 'Urus';
COUNT(DISTINCTDRIVER_ID#)
-------------------------
1