InnoDB database engine saves all the data in the form of pages, linked in a B-tree structure. The B-tree or clustered database structure consists of various leaf nodes, each having its index node. The index node contains information related to primary key and all columns in the InnoDB table. Corruption or damage in the B-tree structure can occur due to various reasons, resulting into inaccessibility of all the table records.
Furthermore, it might also result in inaccessibility of complete database components records. In such situations, if you have a backup of the InnoDB database,