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Update DBMS/SQL/Week6/writeup.md

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Aadit Agrawal 2025-02-11 15:39:29 +05:30
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DBMS/SQL/Week6/writeup.md
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@ -1,31 +1,4 @@
### 2. Generate a trigger displaying driver information, on participating in an accident ### 1. Create a function to return total number of accidents happened in a particular year.
```SQL
SQL> create or replace trigger driver_info
after insert on participated
for each row
declare
id varchar2(4);
nam varchar2(10);
addr varchar2(30);
begin
select "driver_id#", name, address
into id, nam, addr
from person
where :new."driver_id#" = person."driver_id#";
dbms_output.put_line('driver_id: ' || id || ' name: ' || nam || ' address: ' || addr);
exception
when no_data_found then
dbms_output.put_line('no driver found for driver_id: ' || :new."driver_id#");
when others then
dbms_output.put_line('an error occurred: ' || sqlerrm);
end;
/
Trigger created.
```
### 3. Create a function to return total number of accidents happened in a particular year.
```SQL ```SQL
SQL> create or replace function total_accd SQL> create or replace function total_accd
@ -51,7 +24,7 @@ TOTAL_ACCD(2024)
2 2
``` ```
### 4. Create a procedure to display total damage caused due to an accident for a particular driver on a specific year. ### 2. Create a procedure to display total damage caused due to an accident for a particular driver on a specific year.
```SQL ```SQL
create or replace procedure tot_damage create or replace procedure tot_damage
(driver in varchar2, year in number) is (driver in varchar2, year in number) is
@ -79,7 +52,7 @@ Total damage: 150
PL/SQL procedure successfully completed. PL/SQL procedure successfully completed.
``` ```
### 5. Create a procedure to display accident information which took place in a particular location. ### 3. Create a procedure to display accident information which took place in a particular location.
```SQL ```SQL
SQL> create or replace procedure accident_info(location_value in varchar) IS SQL> create or replace procedure accident_info(location_value in varchar) IS
@ -98,3 +71,5 @@ Report Number: 1, Date: 01-JAN-24, Location: Delhi India
PL/SQL procedure successfully completed. PL/SQL procedure successfully completed.
``` ```