Figure 3

Example of a GenoLink query. (a) A simple query represented as a graph pattern. This simple query will retrieve hetero (Name1 != Name2) protein-protein interactions where at least one of the two proteins has an annotated known function (Name !: "hypothetical"). (b) The GQL script describing the same query. GQL reserved keywords are indicated in bold. In the declaration of variable p1, the expression located to the right of the 'where' clause is a local constraint (here: the name must not contain hypothetical). In the declaration of my_query, the expression located to the right of the 'where' clause is the global constraint (here: the two names must be different). (c) Result obtained by executing this query against the data graph shown in Figure 4b. When applied to the entire Helicobatcer pylori strain 26695 data set, this query yields 896 different answers.