Two indexes are created by default during the table creation: the ROWID and RECBYT indexes.
The ROWID index, formed by a field and an associated index, holds the auto increment value generated automatically by c-tree every time a new record is added to the table.
When a table is created with ROWID support, a ROWID index is automatically created for the table. The operation of the ROWID index is transparent to the c-treeDB user. c-treeDB will automatically update the index entries. The ROWID index will not appear in the list of indexes for a table. The user cannot alter or delete the components of the ROWID index.
Functions that deal with the ROWID index are:
By default, all c-treeDB created tables have support for the ROWID index. If, for any reason, a table should be created without support for this index, the create mode CTCREATE_NOROWID should be added in CTTable:Create() method.