The database used is still based on 2. The operation of the database jxgl
Create a data table
(1) Create a graphical interface, we will not say much
(2) Transact_sql statement creation
Example: Create student table under jxgl database
use jxgl
go
create table student
(Student ID char (10), name nvarchar (4) not null, gender nchar (1), department nvarchar (10), college entrance examination score smallint)
Management Data Sheet
Example: Modify the student table under the jxgl database to add a column for minorities, which is of type bit. Then delete this column in this table
use jxgl
go
alter table student
add minority bit
go
alter table student
drop column minority
go
Delete data table
Example: Delete student table under jxgl database
drop table student
go
