[Retracted] Development of Online Political and Ideological Education System Based on Personalized Recommendation

Table 1

Online teaching system registry.

The field	The field type	The length of the field	Whether the primary key
Serial number	int	10	Is
The user name	varchar	20	No
Password	varchar	20	No
Teacher status or not	Bit		No
Registration time	datetime		No
The phone number	varchar	12	No
Real name	varchar	10	No
E-mail	varchar	20	No
Last login time	datetime		No