ELECTRICITY BILL (VB)






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DBMS Lab Cycle 4 (sailor,boat,reserve)

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DBMS Lab Cycle 5 (employee,department,project,works_in)

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Create the following tables employee department project works_in CREATE TABLE employee( ssn NUMBER, ename VARCHAR2(40) NOT NULL, desig VARCHAR2(20), dno NUMBER, doj DATE, salary NUMBER, PRIMARY KEY (ssn) ); CREATE TABLE department( dnumber NUMBER, dname VARCHAR2(20), loc VARCHAR2(40), mgrssn NUMBER REFERENCES employee(ssn), PRIMARY KEY(dnumber) ); ALTER TABLE employee ADD FOREIGN KEY (dno) REFERENCES department(dnumber); CREATE TABLE projetc( pnumber NUMBER, pname VARCHAR2(20), dnum NUMBER REFERENCES department(dnumber), PRIMARY KEY(pnumber) ); CREATE TABLE works_in( essn NUMBER REFERENCES employee (ssn), pno NUMBER REFERENCES project(pnumber), hrs NUMBER, PRIMARY KEY(essn,pno) ); INSERT INTO department (dnumber,dname,loc)  VALUES (1,'Admin','Banglore'); INSERT INTO department (dnumber,dname,loc)  VALUES (2,'RMG','Kochi'); INSERT INTO department (dnumber,dname,loc)  VAL...
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