ams

Attendance managing system.

Structure

Tables

lessonTime:

1 08.30-09.15

2 09.20-10.05

3 10.25-11.10

4 11.15-12.00

5 13.30-14.15

6 14.20-15.05

7 15.25-16.10

8 16.15-17.00

9 17.05-17.50

10 18.30-19.15 (nighty self-study)

11 19.20-20.05

12 20.10-20.55

key-name rules

TableName:keyName:ID

Database layers

Layer 1 Connection

The layer is record to string key-valve pairs realized by keyv.

Layer 2 Database

The layer is the layer which support table-like operation based on ID.

Layer 3 Table

This layer need to convert all kinds of values into string in order to communicate with layer 2.