A method for reconciling one or more target resources with a graph database, the method comprising, at a computing apparatus: obtaining a summary of the graph database as a plurality of distinct clusters each comprising one or more related graph resource, including: partitioning the graph database into a plurality of distinct clusters; and generating a semantic description of each of the distinct clusters by reducing the distinct cluster to a list of terms, wherein the list includes, for each resource in the cluster: the name of the resource preceded by the names of each of its ancestors as a name term; for each property restriction linked to the resource, the name and range of the property restriction as a property term; and the method further comprising: in dependence upon an assessment of similarity between each of the distinct clusters and the one or more target resources, dividing the plurality of distinct clusters into groups including a first group of distinct clusters selected for immediate reconciliation processing and a second group of distinct clusters selected for suspended reconciliation processing, which is delayed with respect to the immediate reconciliation processing, wherein the assessment of similarity is based upon a comparison of the semantic description of the distinct cluster and the semantic description of the one or more target resources. obtaining a summary of the graph database as a plurality of distinct clusters each comprising one or more related graph resource, including: partitioning the graph database into a plurality of distinct clusters; and generating a semantic description of each of the distinct clusters by reducing the distinct cluster to a list of terms, wherein the list includes, for each resource in the cluster: the name of the resource preceded by the names of each of its ancestors as a name term; for each property restriction linked to the resource, the name and range of the property restriction as a property term; and partitioning the graph database into a plurality of distinct clusters; and generating a semantic description of each of the distinct clusters by reducing the distinct cluster to a list of terms, wherein the list includes, for each resource in the cluster: the name of the resource preceded by the names of each of its ancestors as a name term; for each property restriction linked to the resource, the name and the name of the resource preceded by the names of each of its ancestors as a name term; for each property restriction linked to the resource, the name and range of the property restriction as a property term; and the method further comprising: in dependence upon an assessment of similarity between each of the distinct clusters and the one or more target resources, dividing the plurality of distinct clusters into groups including a first group of distinct clusters selected for immediate reconciliation processing and a second group of distinct clusters selected for suspended reconciliation processing, which is delayed with respect to the immediate reconciliation processing, wherein the assessment of similarity is based upon a comparison of the semantic description of the distinct cluster and the semantic description of the one or more target resources. in dependence upon an assessment of similarity between each of the distinct clusters and the one or more target resources, dividing the plurality of distinct clusters into groups including a first group of distinct clusters selected for immediate reconciliation processing and a second group of distinct clusters selected for suspended reconciliation processing, which is delayed with respect to the immediate reconciliation processing, wherein the assessment of similarity is based upon a comparison of the semantic description of the distinct cluster and the semantic description of the one or more target resources.