理解B*treeindex内部结构

/+*
drop table gyj_t1;

create table gyj_t1 (
id int,
name varchar2(100)
);



begin 
 for i in  1 .. 5000 loop
   insert into gyj_t1 values(i,'gyj'||i);
    commit;
 end loop; 
end;
/


非唯一索引
create index idx_gyj_t1 on gyj_t1(id);


唯一索引
drop index idx_gyj_t1;
create unique index idx_gyj_t1 on gyj_t1(id);


gyj@ZMDB> select object_id from dba_objects where object_name='IDX_GYJ_T1';

 OBJECT_ID
----------
     24515

gyj@ZMDB> select header_file,header_block from dba_segments where segment_name='IDX_GYJ_T1';

HEADER_FILE HEADER_BLOCK
----------- ------------
          7         2618

+/