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7/29/2019 dbms123
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1. Consider the Insurance database given below. The primary keys are underlined and the
data types are specified:
PERSON (driver id #: String, name: string, address: string)
CAR (regno: string, model: string, year: int)
ACCIDENT (report-number: int, accd-date: date, location: string)
OWNS (driver-id #:string, Regno:string)
PARTICIPATED (driver-id: string, Regno:string, report-number:int, damage amount:int)(i) Create the above tables by properly specifying the primary keys and the foreign
keys.
create table person
(
driver_id varchar(10) primary key,
name varchar(10),
address varchar(20)
);
create table car
(
regno varchar(12) primary key,
model varchar(10),
year number(4)
);
create table accident
(
repno number(3) primary key,
accd_date date,
location varchar(12)
);
create table owns
(
driver_id varchar(10) references person(driver_id),
regno varchar(12) references car(regno),
primary key(driver_id,regno)
);
create table participated
(
driver_id varchar(10) references person(driver_id),
regno varchar(12) references car(regno),
repno number(3) references accident(repno),damage_amt number(10,2),
primary key(driver_id,regno,repno)
);
(ii) Enter at least five tuples for each relation.insert into person values
('dr1','salman','bapunagar, bombay');
insert into person values
('dr2','diganth','rrnagar, bangalore');
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insert into person values
('dr3','vijay','goripalya, mysore');
insert into person values
('dr4','darshan','gubbi, mandya');
insert into person values
('dr5','sudeep','jaynagar, bangalore');
insert into car values
('dl01-h1234','innova','2008');
insert into car values
('ka01-m1234','santro','2007');
insert into car values
('ka09-s1234','maruthi','2005');
insert into car values
('ka11-f1234','innova','2008');
insert into car values
('ka01-h1234','innova','2006');
insert into accident values
(3,'01-jan-2008','delhi');
insert into accident values
(6,'01-jun-2007','bangalore');
insert into accident values
(9,'01-nov-2007','tumkur');
insert into accident values
(12,'01-sep-2008','bangalore');
insert into accident values
(15,'01-apr-2006','bangalore');
insert into owns values('dr1','dl01-h1234');
insert into owns values
('dr2','ka01-m1234');
insert into owns values
('dr3','ka09-s1234');
insert into owns values
('dr4','ka11-f1234');
insert into owns values
('dr5','ka01-h1234');
insert into participated values
('dr1','dl01-h1234',3,704245);insert into participated values
('dr2','ka01-m1234',6,35653);
insert into participated values
('dr3','ka09-s1234',9,54323);
insert into participated values
('dr4','ka11-f1234',12,17439);
insert into participated values
('dr5','ka01-h1234',15,42174);
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(iii) Demonstrate how you
a. Update the damage amount to 25000 for the car with a specific Regno in theACCIDENT table with report number 12.
update participated
set damage_amt=25000
where repno=12;
b. Add a new accident to the database.insert into accident values
(18,'01-mar-2008','bangalore');
(iii) Find the total number of people who owned cars that were involved in accidentsin 2008.
select count(*) as cnt_acc
from accident,participated,personwhere
(
(participated.repno=accident.repno) and
(participated.driver_id=person.driver_id) and
(accident.accd_date like '%08')
);
(iv) Find the number of accidents in which cars belonging to a specific model wereinvolved.
select count(*) as cnt
from car
where model='innova';
(vi) Generate suitable reports.
(vii)Create suitable front end for querying and displaying the results.