单选题What is true about version-enabled tables？（）A The unit of versioning is the schema.B It is possible to version enable a table pertaining to SYS.C There are as many segments as versions for the same base table.D It is possible to create workspaces if th
题目
单选题
What is true about version-enabled tables？（）
A
The unit of versioning is the schema.
B
It is possible to version enable a table pertaining to SYS.
C
There are as many segments as versions for the same base table.
D
It is possible to create workspaces if there is no version-enabled table in the database.