In Oracle Database 23c developers can work with property graphs using SQL. They can create a graph from relational tables and use the new GRAPH_TABLE and MATCH syntax to traverse connections in data. A Property Graph is a 'graph view' of data in relational tables, where implicit connections such as foreign key relationships are made explicit. This enables you to write SQL queries to find highly connected data entities, unravel hierarchical connections, and find anomalous patterns in data. Application Express 23.1 has graph-specific widgets, and there will soon be a plugin to visualize the result of property graph queries. Join us to learn more, and see a preview of graph visualization plugin for APEX.

1. Use Oracle Graph with APEX
Make building modern data-driven applications easier
Rahul Tasker
Spatial and Graph Product Management

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• Introduction to graphs
• What are SQL property graphs
• Graphs in APEX
• Demo
• Q/A
Agenda

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Graph
What is a graph?
• Data model representing entities as vertices and
relationships as edges
• Optionally including attributes
What are typical graphs?
• Social networks
• LinkedIn, Facebook, Twitter, ...
• Physical networks, supplier networks, ...
• Dependency graphs
• Part hierarchies, data lineage, org charts, ...
• Workflows
• Knowledge graphs
• Associating related entities, e.g. in public safety
E
A D
C B
F

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A graph representation of your data
• Data entities become vertices
• Connections between them become edges
Graph Analytics
Consider new nodes J, K, L
• Node I is highly connected, so it could be an
important node
• Node J has only one connection, but that is an
incoming edge from Node I, an important node
• So Node J might be important too
Example: Pagerank algorithm identifies such
Graph Data Model
E
A
D
C
B
F
H
I
G
J
K
L

6. Ora-Gram-Book
Ora-Gram Book is a fictitious social media platform.
• Connect with family and friends
• Post photos and videos
• Comment and like others' posts
As new users join Ora-Gram-Book, they want to make it easier for friends and
family to find each other easier and faster.
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7. Users
ID
Email
Name
DOB
Posts
ID
Content
Likes
ID
Post_ID
Liker_ID
Comments
ID
Post_ID
Commentor_ID
Follows
ID
Follower_ID
Followed_ID
Creates
ID
Poster_ID
Post_id
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8. Users
ID
Email
Name
DOB
Posts
ID
Content
Likes
ID
Post_ID
Liker_ID
Comments
ID
Post_ID
Commentor_ID
Follows
ID
Follower_ID
Followed_ID
Users
Follows
Comments
Likes
Creates
ID
Poster_ID
Post_id
Posts
Creates
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9. What users should we recommend Thom follows?
Recommend new connections to users based on a high amount of mutual follows/followers
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10. What users should we recommend Thom follow?
Recommend new connections to users based on a high amount of mutual follows/followers
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Create a Graph from Tables
ID
1
2
3
…
672
673
674
…
831
832
833
…
FOLLOWERS
USERS
FOLLOWER_ID FOLLOWED_ID
1 2
1 672
3 1
2 833
2 840
2 493
… …
PGQL DDL SYNTAX:
CREATE PROPERTY GRAPH Oragrambook_graph
VERTEX TABLES (
USERS LABEL Users PROPERTIES ( ID, EMAIL, NAME, DOB )
)
EDGE TABLES (
FOLLOWERS
KEY(POST_ID)
SOURCE KEY ( FOLLOWER_ID) REFERENCES USERS
DESTINATION KEY ( FOLLOWED_ID) REFERENCES USERS
LABEL follows PROPERTIES ( FOLLOWED_ID )
672
833

12. Query a Graph
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/* List accounts which have transferred money to another account */
select id from GRAPH_TABLE(social_graph
MATCH (src)-[is follows]->(dst)
COLUMNS (src.id as id) );
Vertices are in (), edges are in []
Columns to return
follows
src dst

13. Query a Graph
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/* List users who follow other users */
select id from GRAPH_TABLE(social_graph
MATCH (src)-[is follows]->(dst)
COLUMNS (src.id as id) );
Vertices are in (), edges are in []
Columns to return
select id from GRAPH_TABLE(social_graph
MATCH (src)-[is follows]->{1,3}(dst)
COLUMNS (dst.id as id) ); Path length in {} – from 1 to 3
hops
/* List users who follows a user who follows a user… (inclusive) */
follows
src dst
follows follows

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Contrasting Developer Architectures
Document Reporting
Every App Requires distributed
execution and data movement across
multiple fragmented databases
Developers Focused on Innovation
Developers Focused on Integration
EVENT
RPC
ETL
REPLICATION
EVENT
RPC
ETL
REPLICATION
Simply invoke SQL or REST API to
run report, ML, graph, spatial,
blockchain, IoT, etc. in a
converged database
OracleStrategy
HeterogeneousStrategy
Text Search Graph
ML
EVENT
RPC
ETL
REPLICATION
ETL
REPLICATION
EVENT
RPC

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Graphs in APEX
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16. Newly release Graph Visualization and Sample App
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Available at https://oracle.github.io/apex/

17. Graph Visualization Plugin
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• Visualize Graph queries
• Customize appearance and layout
• Customize labels
• Interactive page item

18. Native Graph Support
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• Property Graph Source
• SQL Query source
• Declares match, columns and
where clauses
• Wherever you can use SQL, you
can use SQL property graphs

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Demo
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20. Modern Apps Need To Generate Value From Data in New Ways
Machine
Learning
Real-Time
Analytics
Blockchain
Documents
Graph
Analysis
Spatial
Processing
Text
Search
IoT
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21. Summary
• Graphs can make complex queries very simple
• New SQL syntax supported for Property Graph
• APEX and other SQL tools and development environments can be used with property graphs out-of-
the-box
• Native Support for APEX
• Graph visualization plugin
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22. Blog posts
• Overview blog post on Oracle Graph 23c
• Get started with property graphs in 23c
Examples (Jupyter, SQLDev)
• Github
Videos
• Property graphs with SQL
• Create, query and visualize graphs with SQL
• OCW presentation – Property graphs join SQL
LiveLabs workshop
• Property graphs in Oracle 23c
Documentation
• Plugin and sample app download
• Plugin documentation
• Oracle Graph Developer‘s Guide
Oracle Graph 23c – Resources
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23. • Learning Sessions
• Hands On Labs
• Digital Sessions
• Demos
• Details on all Graph Cloud World Sessions
• Details on all Spatial Cloud World Sessions
Learn more about Graphs at DatabaseWorld at CloudWorld
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24. Q/A
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