93 lines
2.0 KiB
Markdown
Executable File
93 lines
2.0 KiB
Markdown
Executable File
## Creating tables
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```sql
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CREATE TABLE Borrower (
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Roll_no NUMBER(15),
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Name VARCHAR(255),
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DateOfIssue DATE,
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NameOfBook VARCHAR(255),
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Status VARCHAR(255),
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PRIMARY KEY(Roll_no)
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);
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CREATE TABLE Fine (
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Roll_no NUMBER(15),
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DateOfReturn DATE,
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Amount NUMBER(15),
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FOREIGN KEY(Roll_no) REFERENCES Borrower(Roll_no)
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);
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```
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## Inserting data
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```sql
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INSERT INTO Borrower (Roll_no, Name, DateOfIssue, NameOfBook, Status) values (1, 'Ayush Kalaskar', TO_DATE('2024-07-28','YYYY-MM-DD'), 'DBMS', 'I');
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INSERT INTO Borrower (Roll_no, Name, DateOfIssue, NameOfBook, Status) values (2, 'Himanshu Patil', TO_DATE('2024-07-01','YYYY-MM-DD'),'IOT', 'I');
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INSERT INTO Borrower (Roll_no, Name, DateOfIssue, NameOfBook, Status) values (3, 'Kshitij', TO_DATE('2024-08-05','YYYY-MM-DD'), 'TOC', 'I');
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```
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## Procedure
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```sql
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DECLARE
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p_nameofbook VARCHAR(255);
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p_rollno NUMBER(15) := 1;
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p_dateofissue DATE;
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currentdate DATE;
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noofdays NUMBER(15);
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amount NUMBER(15);
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nodata EXCEPTION;
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BEGIN
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p_nameofbook := '&p_nameofbook';
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currentdate := SYSDATE;
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IF p_rollno <= 0 THEN
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RAISE nodata;
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END IF;
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SELECT DateOfIssue
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INTO p_dateofissue
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FROM Borrower
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WHERE Roll_no = p_rollno AND NameOfBook = p_nameofbook;
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SELECT TRUNC(SYSDATE) - p_dateofissue
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INTO noofdays
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FROM dual;
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DBMS_OUTPUT.PUT_LINE('No of days: ' || noofdays);
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IF (noofdays > 30) THEN
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amount := noofdays * 50;
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ELSIF (noofdays >= 15 AND noofdays <= 30) THEN
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amount := noofdays * 5;
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ELSE
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amount := 0;
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END IF;
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IF amount > 0 THEN
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INSERT INTO Fine (Roll_no, DateOfReturn, Amount)
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VALUES (p_rollno, SYSDATE, amount);
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END IF;
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IF amount > 0 THEN
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UPDATE Borrower
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SET Status = 'R'
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WHERE Roll_no = p_rollno;
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END IF;
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EXCEPTION
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WHEN nodata THEN
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DBMS_OUTPUT.PUT_LINE('Roll number or book name not found.');
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WHEN NO_DATA_FOUND THEN
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DBMS_OUTPUT.PUT_LINE('No entry found for the provided roll number and book name.');
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WHEN OTHERS THEN
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DBMS_OUTPUT.PUT_LINE('An error occurred: ' || SQLERRM);
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END;
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/
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```
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