This document contains SQL statements to create tables for customers, products, and students in a database. It defines the structure of each table with data types for different columns and adds constraints like primary keys, unique keys, foreign keys and check constraints. It also shows sample data being inserted into the student table from another existing table.

1. CREATE
CREATE TABLE CUSTOMER
(CID NUMBER(3) NOT NULL,
CNAME VARCHAR(10) NOT NULL,
CADD VARCHAR(20) ,
CNO NUMBER(10) NOT NULL,
CONSTRAINT C_ID PRIMARY KEY(CID),
CONSTRAINT C_NO1 UNIQUE(CNO),
CONSTRAINT C_NO2 CHECK(LENGTH(CNO)=10)
);
created.
SELECT * FROM TAB;
TABTYPE CLUSTERID
------------------------- ------- ----------
TABLE
TABLE
TABLE
ADE TABLE
NY TABLE
MER TABLE
s selected.
DESC CUSTOMER
Null? Type
--------------------------------------------------------------------------------
----------------------------- -------- ------------------------------
NOT NULL NUMBER(3)
E
NOT NULL VARCHAR2(10)
VARCHAR2(20)
NOT NULL NUMBER(10)
CREATE TABLE PRODUCT
( PID NUMBER(4) NOT NULL,
PNAME VARCHAR(10) NOT NULL,
PRICE NUMBER(10) NOT NULL,
DISCOUNT NUMBER(10) ,
CONSTRAINT P_ID PRIMARY KEY(PID),
CONSTRAINT PRICE_P CHECK>0
);
STRAINT PRICE_P CHECK>0
*
at line 7:
0906: missing left parenthesis
ED
file afiedt.buf
CREATE TABLE PRODUCT
( PID NUMBER(4) NOT NULL,
PNAME VARCHAR(10) NOT NULL,
PRICE NUMBER(10) NOT NULL,

2. DISCOUNT NUMBER(10) ,
CONSTRAINT P_ID PRIMARY KEY(PID),
CONSTRAINT PRICE_P CHECK(PRICE>0)
)
/
created.
DESC PRODUCT
Null? Type
--------------------------------------------------------------------------------
----------------------------- -------- ------------------------------
NOT NULL NUMBER(4)
E
NOT NULL VARCHAR2(10)
E
NOT NULL NUMBER(10)
OUNT
NUMBER(10)
================================================================
CREATE TABLE STUDENT
( SID NUMBER(4) NOT NULL,
SNAME VARCHAR (10) ,
AMBITION VARCHAR (10) ,
MARKS NUMBER(4) ,
SDOB DATE ,
FEES NUMBER(7,2),
FINE NUMBER(7,2) ,
BOOKNO NUMBER(2) ,
CONSTRAINT S_ID PRIMARY KEY(SID),
CONSTRAINT BOOK_NO FOREIGN KEY(BOOKNO)
REFERENCES LIBRARY(BOOKNO)
)
SQL> INSERT INTO STUDENT
2 SELECT *
3 FROM EMP;
14 rows created.