处理器内核随后选出未压缩的、过滤后的数据块，执行基本的数据库操作，如排序、联接和聚合。
A processor core then picks up the uncompressed, filtered data block and performs fundamental database operations such as sorts, joins, and aggregations.
使用与关系数据库一起提供的块载入工具来初始化数据库表。
Use the bulk load tools that are provided with relational databases to initialize database tables.
RMAN将备份已经在数据库中使用的所有数据块。
RMAN will backup all data blocks that have ever been in use in database.
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