Dbms Lab Manual for IV Sem11

8/7/2019 Dbms Lab Manual for IV Sem11

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6. Add primary key constraint for the field ENAME in the table new_Emp.

7. Drop primary key constraint of the field ENAME in the table new_Emp.

8. Rename the table name new_Emp into new_Emp2.

9. Drop the table new_Emp1.

SQL QUERIES: TABLE CREATION

Syntax:

CREATE TABLE tablename (column_name data_ type constraints, );

SQL> CREATE TABLE EmpDetails ( EmpNo Number(5) CONSTRAINT PKey PRIMARY

KEY, EName VarChar(15), Job Char(10) CONSTRAINT Unik1 UNIQUE, Mgr Number(5)

CONSTRAINT FKey1 REFERENCES EMP (EmpNo), Hiredate Date, DeptNo Number(3)CONSTRAINT FKey2 REFERENCES DEPT(DeptNo));

SQL> descEmpDetails;

Name Null? Type

-------------------- -------------- ----------------------

EMPNO NOT NULL NUMBER (5)

ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)

CREATE TABLE FROM AN EXISTING TABLE

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Syntax:

Create table newtablename as select * from oldtablename;

SQL> create table new_Emp as select * from EmpDetails;

Table created.SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)

SQL> create table new_Emp1 as select empno, ename, job, deptno from EmpDetails;

Table created.

SQL> desc new_Emp1;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

DEPTNO NUMBER (3)

ALTER TABLE

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ALTER COLUMNS

Syntax:

Alter table tablename Add / Modify / Drop (column_name data_ type constraints,

);

ADD COLUMN(S)

Before adding columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)

SQL> alter table new_Emp add (Address varchar2 (20), Contactno number (11));

Table altered.

After adding address and contactno columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

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MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)

ADDRESS VARCHAR2 (20)

CONTACTNO NUMBER (11)

MODIFY COLUMN(S)

Before modifying columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)



SQL> alter table new_Emp modify(address varchar2(50));

Table altered.

After modifying address columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


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ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)



DROP COLUMN(S)

Before droping columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

HIREDATE DATE

DEPTNO NUMBER (3)



SQL> alter table new_Emp drop(hiredate);

Table altered.

After droping hiredate columns in new_Emp table

SQL> desc new_Emp;

Name Null? Type

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-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

DEPTNO NUMBER (3)



ALTER CONSTRAINT(S)

Syntax:

Alter table tablename add / Modify / Drop (constraint constraintname [constrainttype]

[(column name)]);

ADD CONSTRAINT(S)

Before adding constraint in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

DEPTNO NUMBER (3)



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SQL> alter table new_Emp add(constraint p_key primary key (ename));

Table altered.

After adding constraint in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME NOT NULL VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

DEPTNO NUMBER (3)



DROP CONSTRAINTS

Before dropping constraint in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME NOT NULL VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

DEPTNO NUMBER (3)

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SQL> alter table new_Emp drop constraint p_key;

Table altered.

After adding constraint in new_Emp table

SQL> desc new_Emp;

Name Null? Type

-------------------- -------------- ----------------------


ENAME VARCHAR2 (15)

JOB CHAR (10)

MGR NUMBER (5)

DEPTNO NUMBER (3)



RENAME TABLE

SYNTAX:

Alter table oldtablename rename to newtablename;

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DROP TABLE

Syntax:

Drop table tablename;

SQL> drop table new_Emp1;Table dropped.

SQL> desc new_Emp1;

ERROR:

ORA-04043: object new_Emp1 does not exist

SQL> select * from tab;

TNAME TABTYPE CLUSTERID

------------------------------ ------------- ----------------

MARKLIST TABLE

NEW_STAFF1 TABLE

PRIYA TABLE

S TABLE

EMPDETAILS TABLE

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Result:

Thus the basic Data Definition Commands are executed and verified successfully.

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EX.NO:2

DATE:

DML COMMANDS

Aim:

To learn about basic Data Manipulation Commands (Insert, Update, Delete and Select).

Create the following table, insert some rows of information and execute the following queries.

Table: EmpDetails

COLUMN NAME DATA TYPE(SIZE)

EMPNO Number (5)

ENAME Varchar2(15)

JOB Char(10)

MGR Number (5)

DEPTNO Number(3)

ADDRESS Varchar2(50)

CONTACTNO Number(10)

Insert the following records in the EmpDetails:

EMPNO ENAME JOB MGR DEPTNO ADDRESS

CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

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1001 Saran PA 1000 101 SALEM 9955248792

10001 ram manager 99 101 chennai 9988765643

1002 viji PAT 1000 101 bangalore 9977678768

QUESTIONS:

1. Update employee number as 1000 of the employee 10001 in the table EmpDetails.

2. Update job as MANAGER of the employee 1000 in the table EmpDetails.

3. Delete employee details who are all resides at Bangalore in the table EmpDetails.

4. Select employee details such as empno, ename, deptno who are all resides at Salem in thetable EmpDetails.

5. Select empno, ename of the employee whose employee number between 1000 and 1002 in

the table EmpDetails.

6. Select empno, ename of the employee whose address is Chennai or Bangalore in the tableEmpDetails.

7. Select empno, ename of the employee whose employee number is greater then 1002 orderby employee name in descending in the table EmpDetails.

8. Select all the details of the employee whose employee number is greater then 1002 orderby address is ascending and employee name in descending in the table EmpDetails.

9. Select all the details of the employee whose employee name is starts withs in the tableEmpDetails.

10. Select all the details of the employee whose employee name has a in the table

EmpDetails.

11. Count the no. of employees in the EmpDetails.

12. Count the no. of distinct department in the EmpDetails.

13. Count the no. of employees based on address in the EmpDetails.

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INSERT COMMAND

Syntax:

SQL> INSERT INTO tablename (columnname1, columnname2 ) VALUES (value1, value2

);

SQL> INSERT INTO tablename values(&fieldname1, &fieldname2 .);

SQL> /

Enter value for column1: value1

Enter value for column2: value2

..

SQL> insert into empdetails (empno, ename, job, mgr, deptno, address, contactno) values(1001,

'Saran

', 'PA', 1000, 101, 'SALEM', 9955248792);

1 row created.

SQL> insert into empdetails values(&empno, '&ename', '&job', &mgr, &deptno, '&address',&contactno);

Enter value for empno: 10001

Enter value for ename: ram

Enter value for job: manager

Enter value for mgr: 99

Enter value for deptno: 101

Enter value for address: chennai

Enter value for contactno: 9988765643

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old 1: insert into empdetails values(&empno, '&ename', '&job', &mgr, &deptno, '&address',

&contactno)

new 1: insert into empdetails values(10001, 'ram', 'manager', 99, 101, 'chennai', 9988765643)

1 row created.

SQL> /


Enter value for ename: viji

Enter value for job: PAT

Enter value for mgr: 1000

Enter value for deptno: 101

Enter value for address: bangalore

Enter value for contactno: 9977678768

old 1: insert into empdetails values(&empno, '&ename', '&job', &mgr, &deptno, '&address',

&contactno)

new 1: insert into empdetails values(1002, 'viji', 'PAT', 1000, 101, 'bangalore', 9977678768)

1 row created.

SQL> select * from empdetails;

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CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792



SQL>commit;

Commit complete.

UPDATE COMMAND

Syntax:

SQL> update table_name set col_name1=value where predicates;

SQL> update empdetails set empno=1000 where empno =10001;

1 row updated.



CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792


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SQL> update e empdetails set job=&job where empno=&empno;

Enter value for job: MANAGER


old 1: update emp_demo set job=&job where empno=1000

new 1: update emp_demo set job=MANAGER where empno =102

1 row updated.


EMPNO ENAME JOB MGR DEPTNO ADDRESSCONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792

1000 ram MANAGER 99 101 chennai 9988765643


DELETE COMMAND

Syntax:

DELETE FROM table_name where predicates;


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CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792



SQL> delete from empdetails where address=bangalore;

1 row deleted.



CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792


SELECT COMMAND

Syntax:

SELECT columns FROM tables WHERE predicates;

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EMPNO ENAME

---------- ----------

1000 ram

1002 Arun

1003 Sudha

ORDERBY CLAUSE

Syntax:

SELECT columns FROM tables WHERE predicates order by columns asc or desc;

SQL> select empno, ename from empdetails where empno>=1002 order by ename desc;

EMPNO ENAME

---------- ----------

1001 Saran

1000 ram

1002 Arun

SQL>select * from empdetails where empno>=1003 order by address desc, ename asc;


CONTACTNO

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---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792

1000 ram MANAGER 1000 101 Chennai 9988765643

1003 Sudha Admin 1000 101 Chennai 9790865432

1002 Arun PAT 1000 101 Bangolore 9870984353

LIKE OPERATOR

Syntax:

SELECT columns FROM tables WHERE predicates like pattern;

SQL> select * from empdetails where ename like 's%';


CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792


SQL> select * from empdetails where ename like '%a_';


CONTACTNO

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---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 101 SALEM 9955248792


AGGREGATE FUNCTION

COUNT

Syntax:

SQL> select count(column_name) from table_name;

SQL> select count(ename) from empdetails;

COUNT(ENAME)

------------------------

4

SQL>select count(distinct deptno) from empdetails;

COUNT(DISTINCTDEPTNO)

--------------------------------

1

Syntax:

SQL> select column_name, count(column_name) from table_name group by column_name;

SQL> select address,count(ename) from empdetailsgroup by address;

ADDRESS COUNT(ENAME)

------------- ------------------------

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SALEM 1

Chennai 2

Bangalore 1

Result:

Thus the basic DML and DCL are executed and verified successfully.

Ex.No: 3

DATE:

NESTED QUERIES AND JOIN QUERIESPage 23 of61


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Aim:

To learn about nested queries and join queries. Create the following tables and execute the

following queries.

Table: DeptDetails

COLUMN NAME

DATA TYPE(SIZE)

DEPTNO Number(3)

DNAME Varchar2(20)

DLOCATION Varchar2(30)

MGR Number (5)

DEPTNO DNAME DLOCATION MGR

----------- ------------- ----------------- ---------

100 Healthcare Chennai 99

101 Manlog Delhi 1000

102 IME Bangalore 1001

Table: EmpDetails


EMPNO Number (5)

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ENAME Varchar2(15)

JOB Char(10)

MGR Number (5)

DEPTNO Number(3)

ADDRESS Varchar2(50)CONTACTNO Number(10)


CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 100 SALEM 9955248792




QUESTIONS:

1. Select Deptno and Dname of managers who are residing in the same city of their

department location.

2. Select all the employee details who are residing in the same city of their department

location.

3. Select all the employee details whose job is not PA and employee name is not end with

n.

4. Select empno, ename, deptno,dlocation of the all employees.

NESTED QUERIES

SQL> Select * from deptdetails;


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----------- ------------- ----------------- ---------






CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 100 SALEM 9955248792




SQL> select deptno, dname from deptdetails where dlocation=(select address from empdetails

where job

=' MANAGER');

DEPTNO DNAME

---------- --------------------

100 Healthcare

SQL>select * from empdetails where address=(select dlocation from deptdetails where

deptdetails.deptno=empdetails.deptno);

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CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------



SQL>select * from empdetails where job'PA' and ename in(select ename from empdetails

where ename not like'%n');


CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------



SQL> select e.empno,e.ename, d.deptno,d.dlocation from empdetails e, deptdetails d where

e.deptno=d.deptno;

EMPNO ENAME DEPTNO DLOCATION

---------- --------------- ------------ --------------------

1001 Saran 100 chennai

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1002 Arun 100 chennai

1000 RAM 100 chennai

1003 Sudha 100 chennai

Result:

Thus the nested and join queries are executed and verified successfully.

Ex.No:4

DATE:

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VIEW

Aim:

To learn about view in SQL (create, replace, update, drop, delete). Create the following

tables and execute the following queries.

Table: DeptDetails


DEPTNO Number (3)

DNAME Varchar2(20)

DLOCATION Varchar2(30)

MGR Number (5)


----------- ------------- ----------------- ---------




Table: EmpDetails


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EMPNO Number (5)

ENAME Varchar2(15)

JOB Char(10)

MGR Number (5)

DEPTNO Number(3)ADDRESS Varchar2(50)

CONTACTNO Number(10)


CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 100 SALEM 9955248792




QUESTIONS:

1. Create empview view from EmpDetails table.

2. Create empview1 view with empno, ename, and address fields from EmpDetails table.

3. Create empview2 view with empno, ename, and address fields who are residing in

Chennai by using EmpDetails table.

4. Create empdeptview view with empno, ename, address and deptno fields who are residing

in Chennai by using EmpDetails, DeptDetails tables.

5. Drop the empdeptview. Update employee name of Sudha as Sudhakar in the

empdeptview.Delete the empdeptview.

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CREATE OR REPLACE VIEW

Syntax:

SQL>CREATE OR REPLACE VIEW view_name AS SELECT columns FROM table WHERE

predicates;


EMPNO ENAME JOB MGR DEPTNO ADDRESSCONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

1001 Saran PA 1000 100 SALEM 9955248792


1002 Arun PAT 1000 100 Bangalore 9870984353


SQL>Create or replace view empview as select * from empdetails;

View Created.

SQL>select * from empview;


CONTACTNO

---------- ---------- ---------- -------- ----------- -------------- -----------------

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1001 Saran PA 1000 100 SALEM 9955248792


1002 Arun PAT 1000 100 Bangalore 9870984353


SQL> create or replace view empview1 as select empno, ename, address from empdetails;

View Created.

SQL> select * from empview1;

EMPNO ENAME ADDRESS

---------- ---------- --------------

1001 Saran SALEM

1000 ram Chennai

1002 Arun Bangalore

1003 Sudha Chennai

SQL> create or replace view empview2 as select empno, ename, address from empdetails where

address=Chennai;

View Created.

SQL> select * from empview2;

EMPNO ENAME ADDRESS

---------- ---------- --------------

1000 ram Chennai

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1003 Sudha Chennai

SQL> create or replace view empdeptview as select e.empno, e.ename,e.address,d.deptno from

empdetails e, deptdetails d where e.deptno=d.deptno and e.address=Chennai;

View Created.

SQL>select * from empdeptview;

EMPNO ENAME ADDRESS DEPTNO

---------- --------------- -------------- ----------

1000 ram Chennai 100

1003 Sudha Chennai 100

UPDATE VIEW

Syntax:

SQL>update viewname set columnname=values where predicates;

SQL>update empdeptview set ename='Sudhakar' where ename='Sudha';

View Updated.

SQL> select * from empdeptview;

EMPNO ENAME ADDRESS DEPTNO

---------- --------------- -------------- ----------

1000 ram Chennai 100

1003 Sudhakar Chennai 100

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Result:

Thus the operations on view are executed and verified successfully.

Ex. No: 5

DATE:

IMPLEMENTATION OF PROCEDURE AND FUNCTION

Aim:To write a PL/SQL program to calculate total and average of student by using procedure

and function.

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PROGRAM

Table Creation

SQL> create table student (regno number(10),name varchar2(20),dbms number(3),os

number(3),maths number(3), total number(3),avg number(5,2));

SQL> desc student;

Name Null? Type

------------------------------ -------- ----------------------------

REGNO NUMBER(10)

NAME VARCHAR2(20)

DBMS NUMBER(3)

OS NUMBER(3)

MATHS NUMBER(3)

TOTAL NUMBER(3)

AVG NUMBER(5,2)

SQL> insert into student(regno,name,dbms,os,maths)values(&regno,'&name',&dbms, &os,

&maths);

(Insert the following values)

SQL> select * from student;

REGNO NAME DBMS OS MATHS TOTAL AVG

--------- --------- -------- ------ ---------- ---------- -------

1 raja 77 88 57

2 ramu 88 64 95

3 jeeva 77 88 99

4 jothi 54 68 59

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5 suresh 99 99 99

PROCEDURE

SQL>create or replace procedure p_total

2 ( dbms in number, os in number, maths in number,3 tot out number) as

4 begin5

6 tot:=dbms+os+maths;

7 end;

8 /

Procedure created.

FUNCTION

SQL> create or replace function f_avg(tot in number ) return number is

2 begin

3 return (tot/3);

4 end;

5 /

Function created.

PL/SQL PROGRAM

SQL> declare

2 cursor c is select * from student;

3 tot number(3);

4 avg1 number(5,2);

5 begin

6 for cur in c loop

7 p_total(cur.dbms,cur.os,cur.maths,tot);8 avg1:=f_avg(tot);

9 update student set total=tot,avg=avg1 where student.regno=cur.regno;

10 end loop;

11 end;

12 /

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PL/SQL procedure successfully completed.

OUTPUT


REGNO NAME DBMS OS MATHS TOTAL AVG

--------- --------- -------- ------ ---------- ---------- -------

1 raja 77 88 57 222 74

2 ramu 88 64 94 246 823 jeeva 77 88 99 264 88

4 jothi 54 68 58 180 60

5 suresh 99 99 99 297 99

SQL>

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Result:

Thus the PL/SQL program to calculate total and average of student by using procedure and

function is created and executed successfully.

Ex. No: 6

DATE:

IMPLEMENTATION OF TRIGGER

Aim:

To write a PL/SQL program to raise trigger before update data on student table.

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PROGRAM

Table Creation

SQL> create table student (regno number(10),name varchar2(20),dbms number(3),os

number(3),maths number(3), total number(3),avg number(5,2));

SQL> desc student;

Name Null? Type

------------------------------ -------- ----------------------------

REGNO NUMBER(10)

NAME VARCHAR2(20)

DBMS NUMBER(3)

OS NUMBER(3)

MATHS NUMBER(3)

TOTAL NUMBER(3)

AVG NUMBER(5,2)

SQL> insert into student(regno,name,dbms,os,maths)values(&regno,'&name',&dbms, &os,

&maths);

(Insert the following values)


REGNO NAME DBMS OS MATHS

--------- --------- -------- ------ ----------

1 raja 77 88 57

2 ramu 88 64 95

3 jeeva 77 88 99

4 jothi 54 68 59

5 suresh 99 99 99

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TRIGGER

create or replace trigger stud before update on student

for each row

when (new.dbms100)

begin

raise_application_error(-20000,'Must enter marks between 0 and 100');

end;

/

PL/SQL PROGRAM

declare

dbms number(3);

os number(3);

maths number(3);

regno number(10);

begin

update student set dbms=&dbms,os=&os,maths=&maths where regno=&regno;

end;

/

OUTPUT

Enter value for dbms: -5

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Enter value for os: 56

Enter value for maths: 78

Enter value for regno: 8

old 7: update student set dbms=&dbms,os=&os,maths=&maths where regno=&regno;

new 7: update student set dbms=-5,os=56,maths=78 where regno=8;

declare

*

ERROR at line 1:

ORA-20000: Must enter marks between 0 and 100

ORA-06512: at "SURESH.STUD", line 2

ORA-04088: error during execution of trigger 'SURESH.STUD'

ORA-06512: at line 7

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Result:

Thus the PL/SQL program to raise trigger before update data on student table is created

and executed successfully.

EXNO:

DATE:

MENU DESIGNS

Aim:To perform menu designs using visual c++

Procedure:

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1. ClickVisual C++ and choose the project tab and select win32 application.

2. Give the project name in selected location (eg c:\....) and click ok.3. Select an empty project and click finish.4. Empty application is created.5. Select Project menu ->Add to project ->new.6. In new dialog box, choose C++ source file and give the file name.7. File view and Class view are created.

8. In File view choose source file and double click on the C++ sourcefile with extension .cpp and enter the code in the correspondingwindow.

9. From Insert menu -> Resource-> menu then click new.10.Menu editor is displayed. Design the menus and submenus in the

menu editor.11.From Insert menu -> Resource-> icon and click new, then design your

own icon12.and click File->save all in your correct project folder (default name of

file is Script1).

13.Select Project->Insert Project into workspace. A dialog boxappears in that choose filetype as all files then select Script1.rc. Nowclick OK/YES for all the popup windows.

14.Select Project->Insert Project into workspace. A dialog boxappears in that choose filetype as all files then select Resource.h.Now click OK/YES for all the popup windows.

15.Select the Script1.rc from script2 files and drag it to place it into thesource files. Repeat the same for Resource.h (drag and place it to theheader files).

16.Delete script2 files and resource1 files.

Finally build and execute the program.

Coding:

#include

#include"resource.h"

const char g_szClassName[]="My Window Class";

LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAMwParam,LPARAM lParam)

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{

switch(msg)

{

case WM_COMMAND:

switch(LOWORD(wParam))

{

case ID_FILE_EXIT:

MessageBox(hwnd,"you clicked exit","Woo!",MB_OK);

PostMessage(hwnd,WM_CLOSE,0,0);

break;

case ID_EDIT_GO:

MessageBox(hwnd,"You Clicked Go","Woo!",MB_OK);

break;

}

case WM_CLOSE:

DestroyWindow(hwnd);

break;

case WM_DESTROY:

PostQuitMessage(0);

break;

default:

return DefWindowProc(hwnd,msg,wParam,lParam);

}

return 0;

}

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int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTRlpCmdLine,int nCmdShow)

{

WNDCLASSEX wc;

HWND hwnd;

MSG msg;

wc.cbSize=sizeof(WNDCLASSEX);

wc.style=0;

wc.lpfnWndProc=WndProc;

wc.cbClsExtra=0;

wc.cbWndExtra=0;

wc.hInstance=hInstance;

wc.hIcon=LoadIcon(GetModuleHandle(NULL),MAKEINTRESOURCE(IDR_MENU1));

wc.hCursor=LoadCursor(NULL,IDC_ARROW);

wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);

wc.lpszMenuName=MAKEINTRESOURCE(IDR_MENU1);

wc.lpszClassName=g_szClassName;

wc.hIconSm=(HICON)LoadImage(GetModuleHandle(NULL),MAKEINTRESOURCE(IDI_ICON1),IMAGE_ICON,16,16,0);

if(!RegisterClassEx(&wc))

{MessageBox(NULL,"Window Registration

Failed","error",MB_ICONEXCLAMATION|MB_OK);

return 0;

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} hwnd=CreateWindowEx(WS_EX_CLIENTEDGE,g_szClassName,"AMenu",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,240,20,NULL,NULL,hInstance,NULL);

if(hwnd==NULL)

{

MessageBox(NULL,"WindowCreationFailed","error",MB_ICONEXCLAMATION|MB_OK);

return 0;

}

ShowWindow(hwnd,nCmdShow);

UpdateWindow(hwnd);

while(GetMessage(&msg,NULL,0,0))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

return msg.wParam;

}

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Result:

Thus the program for menu creation is designed and executed

successfully.

Ex:No:8

Date:

LIBRARY INFORMATION SYSTEM

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Aim:

To implement the library information system using Visual Basic as front-

end and Oracle as backend.

Coding:

Dim con As New ADODB.Connection

Dim rs As New ADODB.Recordset

Private Sub cmdadd_Click()

Rs.AddNew

Private Sub cmdadd_Click()

rs.AddNew

Label5.Caption= No of Books

Text1.Text=

Text2.Text=

Text3.Text=

Text4.Text=

Text5.Text=

Text1.SetFocus

End Sub

Private Sub cmdborrow_Click()

rs(0)=Text1.text

rs(1)=Text2.text

rs(2)=Text3.text

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rs(3)=Text4.text

rs(5)=rs(5)+1

If rs(5)>rs(4) Then

rs.CancelUpdate

MsgBox No books are available for borrowing

Else

rs.Update

MsgBox Book borrowed

Endif

rs.MoveFrist

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)

Text5.Text=rs(4)-rs(5)

End Sub

Private Sub cmdcancel_Click()

rs.CancelUpdate

Label5.Caption=Available books

rs.MoveFirst

Text1.Text=rs(0)

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Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmddelete_Click()

rs.Delete

MsgBoxrecord deleted

rs.MoveFirst

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdexit_Click()

rs.Close

Con.Close

Unload Me

End Sub

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Private Sub cmdfirst_Click()

If Not rs.BOF Then

rs.MoveFirst

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdlast_Click()

If Not rs.BOF Then

rs.MoveLast

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdnext_Click()

rs.MoveFirst

If rs.EOF Then

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rs.MoveLast

MsgBoxLast Record

End if

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdreturn_Click()

rs(0)=Text1.text

rs(1)=Text2.text

rs(2)=Text3.text

rs(3)=Text4.text

rs(5)=rs(5)-1

if rs(5)


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rs.MoveFirst

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdprevious_Click()

rs.MovePrevious

If rs.BOF Then

rs.MoveLast

MsgBoxFirst Record

End if

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End Sub

Private Sub cmdsave_Click()

rs(0)=Text1.text

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rs(1)=Text2.text

rs(2)=Text3.text

rs(3)=Text4.text

rs(4)=val(text5.text).

rs(5)=0

rs.Update

MsgBox Record Update

rs.MoveFirst

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


Label5.Caption=available Books

End Sub

Private Sub Form_Activate()

Con.CursorLocation=adUseClient

Con.OpenProvider=MSDAORA.1;Password=cse;UserID=mukkani;Data

Source=mce

rs.Open Select * from book,con,adOpenDynamic,adLockOptimistic

rs.MoveFirst

If rs.RecordCount=0 Then

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MsgBoxNo records in table

Else

Text1.Text=rs(0)

Text2.Text=rs(1)

Text3.Text=rs(2)

Text4.Text=rs(3)


End If

End Sub

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Result:

Thus the library information system is implemented using Visual Basic

with Oracle.

s

Documents

Dbms Lab Manual for IV Sem11