Create README.md

PostgreSQL page

Author: sylwesterdec

data-platform/open-source-data-platforms/postgresql/README.md

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+# OCI PostgreSQL 
+
+OCI Database with PostgreSQL is a fully managed PostgreSQL-compatible service with intelligent sizing, tuning, and high durability.
+
+The service automatically scales storage as database tables are created and dropped, making management easier on you and optimizing storage spend. 
+Data is encrypted both in-transit and at rest. 
+OCI Database with PostgreSQL is designed for high availability by offering durability even in the event of an availability domain (AD) failure.
+
+
+# Useful Links
+
+- [OCI PostgreSQL launch blog](https://blogs.oracle.com/cloud-infrastructure/post/oci-database-postgres)
+- [OCI PostgreSQL features](https://blogs.oracle.com/cloud-infrastructure/post/first-principles-optimizing-postgresql-for-the-cloud)
+
+
+# License
+
+Copyright (c) 2023 Oracle and/or its affiliates.
+
+Licensed under the Universal Permissive License (UPL), Version 1.0.
+
+See [LICENSE](https://github.com/oracle-devrel/technology-engineering/blob/main/LICENSE) for more details.