My test environment is： #create table test (name text,age int); #create index idx on test(name); #table test include a record (name:'tom',age:32). My confusion is when I apply the following statement,how sqlite match the record and the b+-tree node which include the record ? statement:select * from test where name='tom'; First,I say my understanding, but I'm not sure if it's correct, so I hope you can confirm it for me. If there are any mistakes, please correct them。 ##My understanding is :vm engine use tree-module service,tell tree-module vm want to get record which name='tom'.tree-module first do binary-search in a b-tree (which holds the content of the index of table test) to find rowid,then do a binary-search in b+tree (which holds the records of the table test) by rowid. when get rowid,how to map the rowid to tree-node which include the rowid?