A method for determining a common sequence of statements from one or more sets of ordered statements. A data object is created that has a first group of data entries, which is created from a first sequence of statements of a first set of statements. Each data entry defines a link between a source and destination statement from the first sequence. Data entries created from a second sequence of statements of a second set are added to the first group of data entries. Each data entry from the second sequence defines a link between a source statement and a destination statement from the second sequence. A second group of data entries is created, which is determined from the first group of data entries that have an equivalent source and destination statements. The second group of data entries is stored in a database as the common sequence of statements.