Update README.md

Author: witold-swierzy

data-platform/core-converged-db/cross-model-database/README.md

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 # Cross Model Database
 This area focuses on discussing different data models supported by Oracle Converged Database
 
+## Livelabs Workshops  
+- [Get Started with Maps and Spatial in APEX](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=936&clear=RR,180&session=107096809782354)
+- [Exploring Operational Property Graphs in 23c Free](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=3659&clear=RR,180&session=107096809782354)
+- [Get started with Converged Database for Developers - On Premises](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=613&clear=RR,180&session=107096809782354)
+- [Developing with JSON and SODA in Oracle Database](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=831&clear=RR,180&session=107096809782354)
+  
 # License
 Copyright (c) 2023 Oracle and/or its affiliates.