A method for updating an index in a database includes storing a plurality
of changes to be made to a database index in a change table. Each of the
changes is associated with an identifier. The method also includes
sorting the changes in the change table based on the identifier
associated with each of the changes. The method further includes updating
the database index using the sorted changes. The database index includes
a data block, and updating the database index includes applying at least
two of the changes from the change table to the data block during a
single operation.