Dbms Record

S.No. Date Name of the ExperimentPage No.

Marks Obtained

Signature

1Data Definition Language and Data Manipulation Language

1

2Database Language with Constraints

7

3 Cursors 10

4 Triggers 15

5 Functions 19

6 Procedures 23

7 Embedded SQL 27

8 Entity Relationship Model 36

9 Payroll Process 41

10 Banking System 47

11 Library Information System 53

Average =

CONTENTS

Ex No. : 1

Aim:To write SQL Queries using Data Definition Language and

Data Manipulation Language

DATA DEFINITION LANGUAGE

CREATE

Syntax:

SQL> create table <table_name> ( col_name1, datatype(size),………..);SQL> create table <table_name> as select * from <source_table_name>

Queries: SQL> create table employee(emp_id number(5),emp_name varchar2(10), salary number(6));

Table created.

SQL> desc employee; Name Null? Type ----------------------------------------- ---------- ---------------------------- EMP_ID NUMBER(5) EMP_NAME VARCHAR2(10) SALARY NUMBER(6)

SQL> create table emp as select * from employee;Table created.

SQL> desc emp; Name Null? Type ----------------------------------------- ---------- ---------------------------- EMP_ID NUMBER(5) EMP_NAME VARCHAR2(10) SALARY NUMBER(6)

ALTER:

Syntax:

SQL> alter table <table_name> add( new col_name1, datatype(size),………..);

Queries:

SQL> alter table employee add(experience number(2));

Table altered.SQL> desc employee;

Name Null? Type ----------------------------------------- ---------- ---------------------------- EMP_ID NUMBER(5) EMP_NAME VARCHAR2(10) SALARY NUMBER(6) EXPERIENCE NUMBER(2)

TRUNCATE:

Syntax:

SQL> truncate table <table_name>;

Queries:

SQL> truncate table employee;

Table truncated.

SQL> desc employee; Name Null? Type ----------------------------------------- ---------- ---------------------------- EMP_ID NUMBER(5) EMP_NAME VARCHAR2(10) SALARY NUMBER(6) EXPERIENCE NUMBER(2)

SQL> select * from employee;

no rows selected

DROP:

Syntax:

SQL>drop table <table_name>;

Queries:

SQL> drop table employee;

Table dropped.

SQL> desc employee;ERROR:ORA-04043: object employee does not exist

DATA MANIPULATION LANGUAGE

INSERT:

Syntax:SQL> insert into <table_name> values(val1,……);SQL> insert into <table_name> values(‘&col_name1’,……);

Queries:

SQL> insert into employee values(1006,'Ram',8500);1 row created.

SQL> insert into employee values(&emp_no,'&name',&sal);Enter value for emp_no: 1007Enter value for name: ranjithEnter value for sal: 15000old 1: insert into employee values(&emp_no,'&name',&sal)new 1: insert into employee values(1007,'ranjith',15000)

1 row created.

SQL> select * from employee; EMP_ID EMP_NAME SALARY ------------- --------------------- ------------- 1006 Ram 8500 1007 Ranjith 15000

SQL>

SELECT:

Syntax:

SQL> select *from <table_name>;

Queries:


EMP_ID EMP_NAME SALARY ------------- --------------------- ------------- 1006 Ram 8500 1007 Ranjith 15000

SQL>

UPDATE:

Syntax:

SQL> update <table_name> set col_name1=value where col_name2=value;

Queries:

SQL> update employee set Salary=&sal where emp_id=&emp_id;Enter value for sal: 9200Enter value for emp_id: 1006old 1: update employee set experience=&exp where emp_id=&emp_idnew 1: update employee set experience=5 where emp_id=1006

1 row updated.


EMP_ID EMP_NAME SALARY ------------- --------------------- ------------- 1006 Ram 9200 1007 Ranjith 15000

SQL>

DELETE:

Syntax:

SQL> Delete from <table_name> where col_name=value;

Queries:

SQL> delete from employee where emp_id=1007;

1 row deleted.


EMP_ID EMP_NAME SALARY ------------- --------------------- ------------- 1006 Ram 9200 SQL>

Result:

Contents Max. Marks Marks ObtainedDesign 20Development 20Queries & Execution 20Viva Voce 20Record 20Total 100

Ex No. : 2

Aim:To write SQL queries implementing constraints with DDL and DML

Syntax:

SQL> create table <table_name> ( col_name1, datatype(size),……….., primary key(col_name1,….) );

SQL> create table <table_name> ( col_name1, datatype(size),……….., unique(col_name1,….) );

SQL> create table <table_name> ( col_name11, datatype(size),……….., foreign key(col_name11,….) as references <source_table_name>(col_name21,… );

SQL> create table <table_name> (col_name1 datatype(size) not null,………);SQL> create table <table_name>(col_name1 datatype(size),…..,

check(col_name1 in value));SQL> create table <table_name>(col_name1 datatype(size),…..,

check(col_name1 not in value));SQL> create table <table_name>(col_name1 datatype(size),…..,

check(col_name1 between value1 and value2));

Queries:

SQL> create table sample(id number(5), name varchar2(10), primary key(id));

Table created.

SQL> desc sample; Name Null? Type ---------------- ----------------- ---------------------------- ID NOT NULL NUMBER(5) NAME VARCHAR2(10)

SQL> create table sample(id number(5), name varchar2(10), unique(id));

Table created.

SQL> desc sample; Name Null? Type ---------------- ----------------- ---------------------------- ID NUMBER(5) NAME VARCHAR2(10)

SQL> create table samp (id number(5), name varchar2(10), foreign key(id) references sample(id));

Table created.

SQL> desc samp; Name Null? Type ---------------- ----------------- ---------------------------- ID NUMBER(5) NAME VARCHAR2(10)

SQL> create table sample (id number(5) not null, name varchar2(10));

Table created.

SQL> desc sample; Name Null? Type ---------------- ----------------- ---------------------------- ID NOT NULL NUMBER(5) NAME VARCHAR2(10)

SQL> create table sample (id number(5), name varchar2(10), check(id in 2000));Table created.

SQL> create table sample (id number(5), name varchar2(10), check(id not in 2000));Table created.

SQL> create table sample (id number(5), name varchar2(10), check(id between 2000 and 3000));

Table created.

Result:


Ex No. : 3

Aim:To a write a PL/SQL program to implement cursors.

For Creating Database:

Algorithm:

1. Create a database with SQL for "bank" table with attributes "ac_no", "name" and "balance”.

2. Set "ac_no" as primary key for that table.

Queries:

For creating database for “bank”

SQL> create table bank (ac_no number(11), name varchar2(10), balance number(5), primary key(ac_no));

SQL> insert into bank values(&ac_no,'&name',&balance);

CURSORS

Algorithm:

For Deposit:

1. Start the procedure named withdraw2. Declare 2 variables to get 2 integers3. Declare a cursor named cur4. get the balance into the cursor for the given account no5. open the cursor and fetch the data into the variables6. to update the current balance subtract the given amount to the existing balance7. exit loop when cursor fetches null value8. close cursor and end the procedure

For withdraw:1. Start the procedure2. Declare two variables as number for ac_no and amount.3. Declare a cursor named cur4. get the balance into the cursor for the given account no5. open the cursor and fetch the data into the variables6. to update the current balance add the given amount to the existing balance7. close cursor and end the procedure

Queries:

For deposit:

SQL> create or replace procedure deposit(m number,n number) asc number;cursor cur is select balance from scott.bank where ac_no=m;begin

open cur;loop

fetch cur into c;update bank set balance=c+n where bank.ac_no=m;exit when cur%NOTFOUND;

end loop;close cur;

end;/

For Withdraw:

SQL> create or replace procedure withdraw(m number,n number) asc number;cursor cur is select balance from scott.bank where ac_no=m;begin

open cur;loop

fetch cur into c;update bank set balance=c-n where bank.ac_no=m;exit when cur%NOTFOUND;

end loop;close cur;

end;/

Database for the table “bank”:

SQL> desc bank

Name Null? Type----------------------------------- ----------------- ---------------------------- AC_NO NOT NULL NUMBER(11) NAME VARCHAR2(10) BALANCE NUMBER(5)

Output:

For deposit:

SQL> select * from bank;

AC_NO NAME BALANCE ------------- ------------------------- ----------------- 6152004 SaravanaKumar.S 2600 6152005 SathyaAnand.R 7200 6152006 Saravanan.A 2500

SQL> exec deposit(6152004,500)

PL/SQL procedure successfully completed.


AC_NO NAME BALANCE -------------- ------------------------ ----------------- 6152004 SaravanaKumar.S 3100 6152005 SathyaAnand.R 7200 6152006 Saravanan.A 2500

For Withdraw:



SQL> exec withdraw(6152004,500);

PL/SQL procedure successfully completed.



SQL>

Result:


Ex No. : 4

Aim:To a write a PL/SQL program to implement triggers.


Algorithm:3. Create a database with SQL for "bank" table with attributes "ac_no", "name" and

"balance”.4. Set "ac_no" as primary key for that table.

Queries:




TRIGGERSFor Negative Balance:

Algorithm:1. Create a trigger2. Declare a trigger trig that fires before insert or update of balance from table

“bank”.3. Use row level trigger using for each row4. While inserting or updating if balance is in negative, report an error5. End trigger

Queries:SQL> create or replace trigger mytrig

before insert or update of balance onscott.bankfor each rowbegin

if :new.balance<0 thenraise_application_error(-20003,'Negative balance not allowed');

end if;end;/

For Low balance:

Algorithm:

1. Create a trigger2. Declare a trigger trig that fires before insert or update of balance from table

“bank”.3. Use row level trigger using for each row4. While inserting or updating if balance is less than 450, report an error5. End trigger

Queries:

SQL> create or replace trigger trigbefore insert or update of balance onscott.bankfor each rowbegin

if :new.balance<450 thenraise_application_error(-20003,’Balance low');

end if;end;/


SQL> desc bank


Output:

SQL> update bank set balance=200 where ac_no=6152004;update bank set balance=200 where ac_no=6152004

*ERROR at line 1:ORA-20003: Balance lowORA-06512: at "SCOTT.TRIG", line 3ORA-04088: error during execution of trigger 'SCOTT.TRIG'

SQL> update bank set balance=-200 where ac_no=6152004;update bank set balance=-200 where ac_no=6152004

*ERROR at line 1:ORA-20003: Negative balance not allowedORA-06512: at "SCOTT.MYTRIG", line 3ORA-04088: error during execution of trigger 'SCOTT.MYTRIG'

SQL> update bank set balance=2600 where ac_no=6152004;

1 row updated.

SQL>

Result:


Ex No. : 5

Aim:To a write a PL/SQL program to find factorial of a number and first ‘n’ numbers

of Fibonacci series using functions.

i) FACTORIAL

Algorithm:

1. Create a function named as fact.2. Declare the variable N, T.3. Get the value of N.4. If n=1 then return 1.5. If n>1 then return n*fact(n-1).6. Execute the value of factorial using dbms_output.put_line().7. End of program.

Queries:

SQL> create or replace function fact(n in number) return number is

beginIf n=1 then

return 1;Else

Return n*fact(n-1);End if;

end;/

SQL> declareN number;T number;

beginN:=&NO;T:=fact(N);Dbms_output.put_line(‘THE FACTORIAL IS ‘||T);

end;/

ii) FIBONACII SERIES

Algorithm:1. Create a function fib.2. Declare the variables I and N.3. If n=1 then return 0.4. If n=2 then return 1.5. If n>2 then return fib(n-1)+fib(n-2).6. Execute the series using dbms_output.put_line().7. End of program.

Queries:

SQL> create or replace function fib(n in number)return number isbegin

If n=1 then return 0;

End if;If n=2 then

return 1;Else

Return fib(n-1)+fib(n-2);End if;

end;/

SQL> declare i number;n number;f number;

beginN:=&NO;Dbms_output.put_line(‘FIBONACCI SERIES IS’);For I in 1..N Loop

F:=fib(I);Dbms_output.put_line (F);

End loop;end;/

Output:

i) FACTORIAL

Enter value for no: 5old 5: N:=&NO;new 5: N:=5;THE FACTORIAL IS 120

ii) FIBONACII SERIES

Enter value for no: 5old 6: N:=&NO;new 6: N:=5;FIBONACCI SERIES IS01123

Result:


Ex No. : 6

Aim:To a write a PL/SQL program to perform arithmetic operations and to find square

of a number using procedures.

i) ARITHMETIC OPERATIONS:

Algorithm:

1. Create the procedure arith using SQL.2. Declare two variables for performing arithmetic operations.3. Declare the variables for storing the result.4. Perform the operations addition, subtraction, multiplication and division using the

variables.5. Print the result.

Queries:

SQL> create or replace procedure arith(n1 in number, n2 in number) asadd1 number(5);sub1 number(5);mul1 number(5);div1 number(5);

beginadd1:=n1+n2;sub1:=n1-n2;mul1:=n1*n2;div1:=n1/n2;dbms_output.put_line ('Addition value '||add1); dbms_output.put_line ('Subtraction value '||sub1);dbms_output.put_line ('Multiplication value '||mul1);dbms_output.put_line ('Division value '||div1);

end;/

SQL> declarea number(5):=&a;b number(5):=&b;

beginarith (a,b);

end;/

ii) SQUARE Of GIVEN NUMBER:

Algorithm:1. Create the procedure in SQL to find the square of given numbers.2. Declare the variables for performing the operations.3. Declare the variables to store the result.4. Perform the operation of squaring the given numbers using the variables.5. Print the result.6. Display the result using dbms commands.

Queries:

SQL> create or replace procedure sq(a1 in number) asb1 number;res number;

beginres:=a1*a1;b1:=res;dbms_output.put_line('Square of a:'||b1);

end;/

SQL> declarea number(5):=&a;

beginsq(a);

end; /

Output:

i) ARITHMETIC OPERATIONS:

Enter value for a: 20old 2: a number(5):=&a;new 2: a number(5):=20;Enter value for b: 4old 3: b number(5):=&b;new 3: b number(5):=4;Addition value 24Subtraction value 16Multiplication value 80Division value 5

ii) SQUARE Of GIVEN NUMBER:

Enter value for a: 5old 2: a number(5):=&a;new 2: a number(5):=5;Square of a:25

Result:


Ex No. : 7

Aim:To write a java program to embedded SQL statement and execute the SQL

queries.


Algorithm:

5. Create a database with SQL for "bank" table with attributes "ac_no", "name" and "balance”.


Queries:




For Java Programing:

For INSERT:

Algorithm:1. Establish the connection between jdbc and odbc using

DriverManager.GetConnection ().2. Now insert the values into the table.3. Display the results.

Program:

import java.io.*;import java.sql.*;

class Ins{

public static void main(String a[]) throws IOException{

DataInputStream in=new DataInputStream(System.in);String str1,str2,str3,str4;System.out.println("Enter the Ac_no:");str1=in.readLine();System.out.println("Enter the Name:");str2=in.readLine();System.out.println("Enter the Balance:");str3=in.readLine();System.out.println("Enter the Ac_Type:");str4=in.readLine();ResultSet result;String str=new String();str="insert into bank values ("+str1+",'"+str2+"',"+str3+",'"+str4+"')";try{

/*Method1 using jdbc-odbc*///Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//Connection con = DriverManager.getConnection("jdbc:odbc:MyProj","scott","tiger");

/*Method2 using jdbc-oci*/DriverManager.registerDriver(new oracle.jdbc.OracleDriver());Connection con=DriverManager.getConnection("jdbc:oracle:oci8:scott/tiger@db9");

Statement stat=con.createStatement();stat.executeUpdate(str);System.out.println("\n1 row inserted.");

}catch(Exception e){

System.out.println("\nError:"+e);}

}}

For SELECT:

Algorithm:1. Insert the values into the table using SQL.2. Establish the connection between jdbc and odbc using

DriverManager.GetConnection ().3. Select the row(s) to be displayed.4. Display the results.

Program:


class Sel{

public static void main(String a[])throws IOException{

ResultSet result;String str1=new String();str1="Select * from bank ";try{

/*Method1 using jdbc-odbc*///Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//Connection con=DriverManager.getConnection("jdbc:odbc:MyProj","scott","tiger");

/*Method2 using jdbc-oci*/DriverManager.registerDriver(new oracle.jdbc.OracleDriver());Connection con=DriverManager.getConnection("jdbc:oracle: oci8:scott/tiger@db9");

Statement stat=con.createStatement();result=stat.executeQuery(str1);System.out.println("\nAc_No\tName\t\t\tBalance\tAc_Type\n");System.out.println("-----------------------------------------------\n");while(result.next()){

System.out.println( result.getString(1) + "\t" + result.getString(2) + "\t\t" + result.getString(3) + "\t" + result.getString(4));

}}catch(Exception e){


}}For DELETE:

Algorithm:1. Insert the values into the table using SQL.2. Get the acc_no that is to be deleted.3. Establish the connection between jdbc and odbc using

DriverManager.GetConnection ().4. Delete the row from the table.5. Display the results.

Program:


class Del{

public static void main(String a[]) throws IOException{

DataInputStream in=new DataInputStream(System.in);String str;System.out.println("Enter the Ac_no:");str=in.readLine();ResultSet result;String str1=new String();str1="delete from bank where ac_no="+str;try{


/*Method2 using jdbc-oci*/DriverManager.registerDriver(new oracle.jdbc.OracleDriver());Connection con=DriverManager.getConnection("jdbc:oracle: oci8:scott/tiger@db9");

Statement stat=con.createStatement();stat.executeUpdate(str1);System.out.println("\n1 row Deleted.");



}}

For UPDATE:

Algorithm:1. Insert the values into the table using SQL.2. To Update, enter the acc_no and the new amount.3. Validate the connection between jdbc and odbc using

DriverManager.GetConnection ().4. Update the table using executeUpdate command in the embedded SQL.5. Display the results.

Program:

import java.io.*;import java.sql.*;import java.lang.*;

class Upd{

public static void main(String a[])throws IOException{

DataInputStream in=new DataInputStream(System.in);String str4,str3;Double d1,d2;System.out.println("Enter the Ac_no:");str4=in.readLine();System.out.println("Enter the Deposit_Amount:");str3=in.readLine();d1=Double.parseDouble(str3);ResultSet result;String str1=new String();String st;String str2=new String();str2="select * from bank where ac_no="+str4;try{


/*Method2 using jdbc-oci*/DriverManager.registerDriver(new oracle.jdbc.OracleDriver());Connection con=DriverManager.getConnection("jdbc:oracle: oci8:scott/tiger@db9");Statement stat=con.createStatement();result=stat.executeQuery(str2);result.next();d2=Double.parseDouble(result.getString(3));d1=d1+d2;st=Double.toString(d1);

str1="update bank set balance="+st+"where ac_no="+str4;stat.executeUpdate(str1);System.out.println("\n1 row Updated.");



}}


SQL> desc bank


Output:

For SELECT:

For Update:

For INSERT:

For DELETE:

Result:

Ex No. : 8


Aim:To design and implementing Entity-Relationship model using Oracle and

Visual Basic

For Creating Backend :

Algorithm:1. Create a database using SQL for "student" table with attributes name, regno,

DOB, address1, address2, state, zipcode.2. Set the regno of "Student" table as primary key.3. Create another database using SQL for table "test" with attributes regno,

DBMS, CN, POM, MP_MC, DM, TOC.4. Set regno of “Test” table as primary key.

Queries:

For creating the database “student”:SQL> create table student (regno number(10), name varchar2(10), dob date,

addr1 varchar2(10), addr2 varchar2(10), state varchar2(10), zipcode number(10), primary key (regno));

SQL> insert into student values (&regno, '&name', &dob, '&addr1', '&addr', '&state', &zipcode);

For creating the database “test”:SQL> create table test (regno number(10), DBMS number(3), CN number(3),

POM number(3), MP_MC number(3), DM number(3), TOC number(3), primary key (regno));

SQL> insert into test values(&regno,'&name',&dob,'&addr1','&addr','&state',&zipcode);

For Creating Frontend:

Algorithm:1. Create a form with form name “frm_Personal” for displaying the personal

details.2. Create a form with form name “frm_Mark” for displaying the Marks.3. Create a form with form name “frm_Student” with 3 command button for

"Student", "Mark" and “close” add the corresponding codes for the button.4. On clicking the Student button, the personal details of all the student in the

database are displayed.5. On clicking the Test button, the marks of the students whose register number

matches with those in Student table alone are displayed.Coding:

Form name = frm_Student

Coding for Student command :

Private Sub cmdPersonal_Click()frm_Personal.Show

End Sub

Coding for Test command :

Private Sub cmdMark_Click()frm_Mark.Show

End Sub

Coding for Close command :

Private Sub cmdClose_Click()Unload me

End Sub

Form name = frm_Personal



End Sub

Form name = frm_Mark



End Sub

Database for the table “student’:

SQL> desc student

Name Null? Type----------------------------------- ----------------- ----------------------------REGNO NOT NULL NUMBER(10)NAME VARCHAR2(10)DOB DATEADDR1 VARCHAR2(10)ADDR2 VARCHAR2(10)STATE VARCHAR2(10)ZIPCODE NUMBER(10)

Database for the table “test”:

SQL> desc test

Name Null? Type----------------------------------- ----------------- ----------------------------REGNO NOT NULL NUMBER(10)DBMS NUMBER(3)CN NUMBER(3)POM NUMBER(3)MP_MC NUMBER(3)DM NUMBER(3)TOC NUMBER(3)

Output:

Result:

Ex No. : 9


Aim:To design a payroll processing and implementing the process using Oracle and Visual Basic

For Creating Backend:

Algorithm:

1. Create a database using SQL for “payroll” table with attributes emp_id, emp_name, DOB, experience, gender, age, address, DOJ, basic salary, HRA, PF and TA.

2. Set primary key for emp_id

Queries:

For creating the database “payroll”:

SQL> create table payroll( id number(5), name varchar2(10), dob date,exp number(4), gender varchar2(10), age number(3), addr varchar2(10), doj date, bpay number(10), hra number(5,2), ta number(5,2), pf number(5,2));

SQL> insert into payroll values(&id, '&name', &dob, &exp, '&gender', &age, '&addr', &doj, &bpay, &hra, &ta, &pf);


Algorithm:

1. Place a form with from name "frm_Main" and Place 6 command buttons for “add”, "update", "delete", "allowance", "report" and "exit" and enter corresponding coding.

2. "add" is used to add new empolyee details.3. "update" is used to make changes in existing details of an employee.4. "delete" is used to remove details of particular employee.5. "allowance" will perform calculation for allowance of an employee.6. "report" will display employee name,emp_id ,gross salary and net salary.7. Place form with form name "frm_Report" and place 3 command buttons for

"back", "print" and "exit".8. "Back" will take us to "frm_Main".

Coding:

Form name = frm_Main

Coding for Add command :

Private Sub cmdAdd_Click()Adodc1.Recordset.AddNew

End Sub

Coding for update command :

Private Sub cmdUpdate_Click()Adodc1.Recordset.UpdateMsgBox "Record Updated"

End Sub

Coding for Delete command :

Private Sub cmdDelete_Click()Adodc1.Recordset.DeleteMsgBox "Record Deleted"

End Sub

Coding for Allowance command :

Private Sub cmdAllow_Click()txt_HRA.Text = txt_Basic.Text / 100 * 12txt_PF.Text = txt_Basic.Text / 100 * 8txt_TA.Text = txt_Basic.Text / 100 * 4

End Sub

Coding for Report command :

Private Sub cmdReport_Click()frm_Report.Showfrm_Report.txt_EmpName.Text = txt_EmpName.Textfrm_Report.txt_EmpID.Text = txt_EmpID.Textfrm_Report. txt_NetSal.Text = txt_Basic.Textfrm_Report.txt_GrossSal.Text = Val(txt_Basic.Text) + Val(txt_HRA.Text) – Val(txt_PF.Text) +Val(txt_TA.Text)

End Sub

Coding for Exit command :

Private Sub cmdExit_Click()Unload me

End Sub

Form name = frm_Report

Coding for Back command :

Private Sub cmdBack_Click()Frm_Main.Show

End Sub

Coding for Print command :

Private Sub cmdPrint_Click()Frm_Main.printform

End Sub

Coding for Exit command :

Private Sub cmdExit_Click()Unload me

End Sub

Database for the table “payroll”:

SQL> desc payroll

Name Null? Type----------------------------------- ----------------- ----------------------------ID NUMBER(5)NAME VARCHAR2(10)DOB DATEEXP NUMBER(4)GENDER VARCHAR2(10)AGE NUMBER(3)ADDR VARCHAR2(10)DOJ DATEBPAY NUMBER(10)HRA NUMBER(5,2)TA NUMBER(5,2)PF NUMBER(5,2)

Output:

Result:


Ex No. : 10

Aim:To design a banking system and implementing the process using Oracle and Visual Basic


Algorithm:

1. Create a database using SQL for "bank" table with attributes "ac_no", "name" and "balance”


Queries:

For creating the database “bank’:

SQL> create table bank( ac_no number(11), name varchar2(10), balance number(5), primary key(ac_no));

SQL> insert into bank values(&ac_no, '&name', &balance);


Algorithm:

1. Place a form with form name "frm_Main" and caption and 4 command buttons for "deposit", "withdraw", "Balance Enquiry" and “Exit” and enter corresponding codings.

2. "Deposit " will add money to the account if we give account number and amount to be added. If given account number is wrong, then the message "NOT FOUND" will be displayed.

3. "withdraw" will drop money from the account .4. "Balance Enquiry" will display the current balance in given account number.

5. Place a form with form name "process" and place 2 buttons for “process” and “cancel" and enter corresponding coding.

Coding:


Coding for Deposit command :

Private Sub cmdDeposit_Click()frm_process.Showfrm_Main.Caption = "Deposit System"frm_process.cmdProcss.Caption = “Deposit”

End Sub

Coding for Withdraw command :

Private Sub cmdWithdraw_Click()frm_process.Showfrm_Main.Caption = "Withdraw System"frm_process.cmdProcss.Caption = “Withdraw”

End Sub

Coding for Balance Enquiry command :

Private Sub cmdBalance_Click()frm_process.Showfrm_Main.Caption = "Balance Enquiry System"frm_process.lblAmt.Visible = Falsefrm_process.lblAmt.Visible = Falsefrm_process.cmdProces.Caption = "Check"

End Sub



End Sub

Coding for Form Active (when ever the form gets active) :

Private Sub frm_Main_Activate()

frm_Main.Caption = "Bank Processing System"End Sub

Form name = frm_Process

Coding for Process command :

Private Sub cmdProcess_Click()Dim str, str1, str2 As Stringstr = "ac_no="str1 = txt_AcNo.Textstr2 = str + str1If cmdProcess.Caption = "Check" Then

Adodc1.Recordset.Filter = str2lblBalance.Visible = True

End IfIf cmdProcess.Caption = "Withdraw" Then

Adodc1.Recordset.Filter = str2lblBalance.Visible = FalseIf lblBalance.Caption = "" Then

MsgBox ("not found")Else

val1 = lblBalance.Captionval2 = Text2.Textval3 = val1 - val2lblBalance.Caption = val3Adodc1.Recordset.UpdateAdodc1.Recordset.SavelblBalacne.Visible = True

End IfEnd IfIf cmdProcess.Caption = "Deposit" Then

Adodc1.Recordset.Filter = str2lblBalance.Visible = FalseIf lblBalance.Caption = "" Then

MsgBox ("not found")Else

val1 = lblBalance.Captionval2 = txtAmt.Textval3 = Val(val1) + Val(val2)lblBalance.Caption = val3Adodc1.Recordset.UpdateAdodc1.Recordset.Save

lblBalance.Visible = TrueEnd If

End IfEnd Sub

Coding for Cancel command :

Private Sub cmdCancel_Click()Unload Me

End Sub

Coding for Form Load (when ever form gets loaded) :

Private Sub frm_Process_Load()lblBalance.Visible = False

End Sub

Design of the table “bank”:

SQL> desc bank


Output:

Result:


Ex No. : 11

Aim:To design a Library information system and implementing the process using

Oracle and Visual Basic


Algorithm:1. Create a database using SQL for “lib” table with attributes book_name, id, author,

publisher, ISBN, level, price and edition.2. Create another database using SQL for “member” table with member_id,

max_books and validity.3. Set primary key for member_id.

Queries:

For creating the database “library”:SQL> create table lib (id number(6), book_name varchar2(10), author varchar2(10),

ISBN varchar2(10), publisher varchar2(10), Book_level varchar2(10), price number(4),

edition varchar2(10));SQL> insert into library values (&id, '&name', '&author', '&ISBN', '&publisher', '&level',

'&price', '&edition');

For creating the database “member”:SQL> create table member (id number(10), max_books number(2), validity date,

primary key(id));SQL> insert into member values(&id, &max_books, &validity);


Algorithm:1. Place a form with form name "frm_Main" and 3 commands buttons for "book

details", "student details" and "close" and enter corresponding codings.2. If we click "student details", there appears a form (frm_Search), enter member_id

in it. If give member_id is correct then a form(frm_Member) will display the student name, maximum number of books and validity.

3. If we click "BookDetails", there appears a form (frm_Book) with menu consisting "search", "update" and "delete".

4. Using "search" menu, if we give book_name, then author, publisher, ISBN, id, level, price and edition will be displayed.

5. Using "Update" menu, we can make changes and save the record.6. Using "delete" menu, we can delete the unwanted book details.

Coding:


Coding for Book Details command :

Private Sub cmdBook_Click()frm_Book.Show

End Sub

Coding for Member Details command :

Private Sub cmdMember_Click()frmSearch.ShowfrmSearch.lblFind.Caption = "Member ID"

End Sub



End Sub

Form name = frm_Book

Coding for Delete menu :

Private Sub mnu_opt_del_Click()If Adodc1.Recordset.EOF = False Then

Adodc1.Recordset.DeleteAdodc1.Recordset.MoveNext

ElseMsgBox ("Error: Deleting record that does not exist.")

End IfEnd Sub

Coding for Exit menu :

Private Sub mnu_file_exit_Click()Unload Me

End Sub

Coding for Search menu :

Private Sub mnu_opt_search_Click()frm_Search.Show

End Sub

Coding for Update menu :

Private Sub mnu_opt_update_Click()Adodc1.Recordset.Update

End Sub

Form name = frm_Member

Coding for Ok Command :

Private Sub cmdOk_Click()Adodc1.Recordset.UpdateUnload Me

End Sub

Form name = frm_Search

Coding for Cancel Command :

Private Sub cmdCancel_Click()Unload Me

End Sub

Coding for Ok Command :

Private Sub cmdOk_Click()Dim a, b, c As StringIf lblFind.Caption = "Book Name" Then

b = "book_name="c = txtFind.Texta = b + "'" + c + "'"frm_Book.Adodc1.Recordset.Filter = aIf frm_Book.txtFind.Text <> "" Then

MsgBox ("Book Found")

ElseMsgBox ("Book Not Found")

End IfFrm_Book.Adodc1.RefreshUnload Me

End IfIf lblFind.Caption = "Member ID" Then

b = "Reg_no="c = txtFind.Texta = b + "'" + c + "'"frm_Member.Adodc1.Recordset.Filter = afrm_Member.ShowUnload Me

End IfEnd Sub

Database for the table “lib”:

SQL> desc lib

Name Null? Type----------------------------------- ----------------- ----------------------------ID NUMBER(6)BOOK_NAME VARCHAR2(10)AUTHOR VARCHAR2(10)ISBN VARCHAR2(10)PUBLISHER VARCHAR2(10)BOOK_LEVEL VARCHAR2(10)PRICE NUMBER(4)EDITION VARCHAR2(10)

Database for the table “member”: SQL> desc member

Name Null? Type----------------------------------- ----------------- ----------------------------ID NOT NULL NUMBER(10)MAX_BOOKS NUMBER(2)VALIDITY DATE

Output:

Result:


Documents

Dbms Record