16.7 Creating Subgraphs

You can create subgraphs based on a graph that has been loaded into memory. You can use filter expressions or create bipartite subgraphs based on a vertex (node) collection that specifies the left set of the bipartite graph.

Note:

Starting from Graph Server and Client Release 22.3, creating subgraphs using filter expressions is deprecated. It is recommended that you load a subgraph from PGQL property graphs. See Loading a Subgraph from a PGQL Property Graph for more information.

For information about reading a graph into memory, see Reading Graphs from Oracle Database into the Graph Server (PGX) for the various methods to load a graph into the graph server (PGX).

• About Filter Expressions
  
• Using a Simple Filter to Create a Subgraph
  
• Using a Complex Filter to Create a Subgraph
  
• Using a Vertex Set to Create a Bipartite Subgraph