<hi xmlns="http://www.tei-c.org/ns/1.0" rend="color(444444)" style="font-size:12pt">The research group currently curates and manages the data using a graph database for the purpose of knowledge management. </hi> <hi xmlns="http://www.tei-c.org/ns/1.0" style="font-size:12pt" xml:space="preserve">We choose a NoSQL graph database, i.e. Neo4j, because of its flexibility, which allow to work with </hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="background(white)" style="font-size:12pt">unstructured, semi-structured, and structured data</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" style="font-size:12pt">, and create a schema-free model (Zhang, 2017). Figure 3 shows the data schema of</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="apple-converted-space"> </hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic" style="font-size:12pt">positiones</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="apple-converted-space"> <hi rend="italic" style="font-size:12pt"> </hi> </hi> <hi xmlns="http://www.tei-c.org/ns/1.0" style="font-size:12pt">built in the Neo4j graph database.</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="apple-converted-space"> The individual nodes represent persons (entitled as Persona), places (entitled as Location), institutions (entitled as Dioceses), <hi rend="italic" style="font-size:12pt">positiones</hi> (entitled as Positio). The archival sources are modelled with multiple nodes: <hi rend="italic" style="font-size:12pt">Volumen</hi> (volume for </hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic" style="font-size:12pt">positiones</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="apple-converted-space">), <hi rend="italic" style="font-size:12pt">Extra</hi> (extra materials for cases), papal interventions (entitled as Intervention), papal fiat (entitled as <hi rend="italic" style="font-size:12pt">Fiat</hi>), and <hi rend="italic" style="font-size:12pt">Nexus</hi> (ID for connecting the different parts of a <hi rend="italic" style="font-size:12pt">positio</hi> within the same volume and to indicate the links between different volumes. For each volume, a so-called <hi rend="italic" style="font-size:12pt">Vakat</hi> node is created for collecting information about empty pages. The Node <hi rend="italic" style="font-size:12pt">Phase</hi> is used to identify up to individual phases that a case may have. The edges represent the relationship structures between the nodes, such as the relations between a petitioner involved in a case and that case. </hi>