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问题

ote the following stru


ote the following structures in your database server: 1:Extents 2:OS Blocks 3:Tablespace  4:Segments  5:Oracle Data Block  Which option has the correct arrangement of these structures from the smallest to the largest()

  • A2, 5, 1, 4, 3
  • B1, 2, 3, 4, 5
  • C5, 2, 1, 3, 4
  • D2, 1, 5, 4, 3
参考答案
参考解析:

Oracle存储模型,逻辑结构在左,物理结构在右。  逻辑结构由大到小database-->tablespace-->segment-->extent-->oracle data block 1、数据库是由多个表空间组成。  2、每个表空间只属于一个数据库,包含一个或多个数据文件,每个数据文件只属于一个表空间, 3、每个段包括一个或多个extents区  4、extent(区),由相邻的数据块的组成。 5、块BLOCK:是数据库中最小的I/O单元,db_block_size

分类:1Z0-052题库
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