(B) the basic operation of the database

A basic operation of the database

1, create and view database

2, modify the database

3, delete the database

Two MySQL data types

1, integer type

2, floating point and fixed-point type Type

3, the date and time types

4, string and binary type

Basic operation of the third data table

1, create a data table

2, view the data table

3, modify the data table

4, delete data table

Constraints of four tables

1, the primary key constraint

2, non-empty constraint

3, the only constraint

4, default constraints

Field value is automatically increased five setting table

Six index

1, the concept of index

2, create an index

3, delete the index