A single data segment in an Oracle database holds all of the data for one of the following:

■ A table that is not partitioned or clustered

■ A partition of a partitioned table

■ A cluster of tables

Oracle creates this data segment when you create the table or cluster with the CREATE statement.

1. 三者的并集是全集啊

2. 当使用create语句创建表时 , Oracle创建数据段

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Introduction to Data Segments (23)