Creating a Table
create table r (A1 D1, A2 D2, ..., An Dn, IC1, IC2, ..., ICk)
r is the name of the relation/table
A1, A2, ..., An are attributes
D1, D2, ..., Dn are the data types of values in the domains of the corresponding attributes
IC1, IC2, ..., ICk are integrity constraints
Ex. the following creates a table for the instructor relation with primary and foreign key constraints
create table instructor (ID char(5), name varchar(20) not null, dept_name varchar(20), salary numeric(8, 2),
primary key (ID), foreign key (dept_name) references department)
Inserting Values
insert into r values (V1, V2, ..., Vn)
Last updated
Was this helpful?