该表包含以下信息
SchoolName | Medium | Board
------------+-----------+-------
DPS | English | CBSE
DPS | English | ICSE
St.Xavier | English | CBSE
St.Xavier | English | GSEB
Gurukul | English | GSEB
Gurukul | Hindi | GSEB
上表分解为:。
SchoolID | SchoolName
----------+-----------
1 | DPS
2 | St.Xavier
3 | Gurukul
MediumID | Medium
----------+-----------
1 | English
2 | Hindi
BoardID | Board
---------+-----------
1 | CBSE
2 | ICSE
3 | GSEB
关系如下图所示。
分解是否正确以存储和检索信息?