must attach output screesnshots Using oracle APEX we are creating a table now - CREATE TABLE DEPT( DEPTNO NUMBER(10) NOT NULL, DNAME VARCHAR(50) NOT NULL, LOC VARCHAR2(30), CONSTRAINT DEPT_PK PRIMARY KEY (DEPTNO) ); We use NOT NULL constraint to make the cell occupied with something related to column line for example; we can see a lot of applications where we see (field is mandatory) Step 2 NOW EMP TABLE- CREATE TABLE EMP( EMPNO NUMBER(10)NOT NULL, ENAME VARCHAR2(50)NOT NULL, JOB VARCHAR2(50), MGR VARCHAR2(50), HIREDATE DATE, SAL NUMBER(6), COMM VARCHAR2(50) DEPTNO NUMBER(5)NOT NULL, CONSTRAINT EMP_FK FOREIGN KEY( DEPTNO) REFERENCES DEPT (DEPTNO), (maintains a connection to EMP table DEPTNO) CONSTRAINT EMP_PK PRIMARY KEY (EMPNO) ); FOREIGN KEY IS used to establish the connection between any two tables PRIMARY KEY is used to uniquely identify records from the table Step 3 CREATE TABLE SAL GRADE ( GRADE NUMBER(10) NOT NULL, LOSAL NUMBER(10), HISAL NUMBER(10), CONSTRAINT SALGRADE_PK PRIMARY KEY (GRADE) ); After setting up all relations, you need to apply following queries to get data from given relations: (Write queries and also paste screenshots in answer file) i. Write a query to print all employees name, job title, salary and department name. ii. Write a query to print all employee names and their respective departments who does not take commission and their salaries are more than 2000. iii. Write a query to print number of employees work in Sales department. Must write appropriate column names.
must attach output screesnshots
Using oracle APEX we are creating a table now -
CREATE TABLE DEPT(
DEPTNO NUMBER(10) NOT NULL,
DNAME VARCHAR(50) NOT NULL,
LOC VARCHAR2(30),
CONSTRAINT DEPT_PK PRIMARY KEY
(DEPTNO)
);
We use NOT NULL constraint to make the cell occupied with something related to column line
for example; we can see a lot of applications where we see (field is mandatory)
NOW EMP TABLE-
CREATE TABLE EMP(
EMPNO NUMBER(10)NOT NULL,
ENAME VARCHAR2(50)NOT NULL,
JOB VARCHAR2(50),
MGR VARCHAR2(50),
HIREDATE DATE,
SAL NUMBER(6),
COMM VARCHAR2(50)
DEPTNO NUMBER(5)NOT NULL,
CONSTRAINT EMP_FK FOREIGN KEY(
DEPTNO) REFERENCES DEPT (DEPTNO), (maintains a connection to EMP table DEPTNO)
CONSTRAINT EMP_PK PRIMARY KEY
(EMPNO)
);
- FOREIGN KEY IS used to establish the connection between any two tables
- PRIMARY KEY is used to uniquely identify records from the table
CREATE TABLE SAL GRADE (
GRADE NUMBER(10) NOT NULL,
LOSAL NUMBER(10),
HISAL NUMBER(10),
CONSTRAINT SALGRADE_PK PRIMARY KEY
(GRADE)
);
After setting up all relations, you need to apply following queries to get data from given
relations: (Write queries and also paste screenshots in answer file)
i. Write a query to print all employees name, job title, salary and department name.
ii. Write a query to print all employee names and their respective departments who does not take commission and their salaries are more than 2000.
iii. Write a query to print number of employees work in Sales department. Must write appropriate column names.
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