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Credentials
`CCE230953344@ictorcl`
`student`
## SQL Logs
```sql
SQL> create table PERSON(driver_id# varchar(30) primary key,name varchar(50),address varchar(100));
Table created.
SQL> desc person
Name Null? Type
----------------------------------------- -------- ----------------------------
DRIVER_ID# NOT NULL VARCHAR2(30)
NAME VARCHAR2(50)
ADDRESS VARCHAR2(100)
SQL> create table CAR(regno varchar(20) primary key,model varchar(30),year int);
Table created.
SQL> create table ACCIDENT(report_number int, accd_date date, location varchar(50));
Table created.
SQL> desc accident
Name Null? Type
----------------------------------------- -------- ----------------------------
REPORT_NUMBER NUMBER(38)
ACCD_DATE DATE
LOCATION VARCHAR2(50)
SQL> alter table accident add constraint pkey primary key(report_number);
Table altered.
SQL> desc ACCIDENT;
Name Null? Type
----------------------------------------- -------- ----------------------------
REPORT_NUMBER NOT NULL NUMBER(38)
ACCD_DATE DATE
LOCATION
SQL> create table OWNS (driver_id# varchar(30),regno varchar(20),primary key(driver_id#,regno),constraint fkey1 foreign key(driver_id#)references PERSON (driver_id#),constraint fkey2 foreign key(regno)references CAR);
Table created.
SQL> desc OWNS
Name Null? Type
----------------------------------------- -------- ----------------------------
DRIVER_ID# NOT NULL VARCHAR2(30)
REGNO NOT NULL VARCHAR2(20)
SQL> select table_name from user_tables;
TABLE_NAME
--------------------------------------------------------------------------------
ACCIDENT
CAR
OWNS
PERSON
SQL> create table PARTICIPATED (driver_id# varchar(30), regno varchar(20), report_number int, damage_amount int, primary key(driver_id#,regno,report_number),constraint fkey1participated foreign key(driver_id#) references Person(driver_id#),constraint fkey2participated foreign key(regno) references car(regno),constraint fkey3paricipated foreign key(report_number) references accident);
Table created.
SQL> desc PARTICIPATED
Name Null? Type
----------------------------------------- -------- ----------------------------
DRIVER_ID# NOT NULL VARCHAR2(30)
REGNO NOT NULL VARCHAR2(20)
REPORT_NUMBER NOT NULL NUMBER(38)
DAMAGE_AMOUNT NUMBER(38)
SQL> select * from person;
DRIVER_ID# NAME
---------- --------------------------------------------------
ADDRESS
--------------------------------------------------------------------------------
1234 Rohan
Delhi India
SQL> alter table person modify driver_id# varchar (30);
Table altered.
SQL> insert into person values(1235,'Rohit','Banglalore India');
1 row created.
SQL> insert into person values(1236,'Ramesh','Baharashtra India');
1 row created.
SQL> insert into person values(1237,'Saarthak','Manipal India');
1 row created.
SQL> desc person;
Name Null? Type
----------------------------------------- -------- ----------------------------
DRIVER_ID# NOT NULL VARCHAR2(30)
NAME VARCHAR2(50)
ADDRESS VARCHAR2(100)
SQL> select * from person;
DRIVER_ID#
------------------------------
NAME
--------------------------------------------------
ADDRESS
--------------------------------------------------------------------------------
1234
Rohan
Delhi India
1235
Rohit
Banglalore India
DRIVER_ID#
------------------------------
NAME
--------------------------------------------------
ADDRESS
--------------------------------------------------------------------------------
1236
Ramesh
Baharashtra India
1237
Saarthak
DRIVER_ID#
------------------------------
NAME
--------------------------------------------------
ADDRESS
--------------------------------------------------------------------------------
Manipal India
```