Added TTS page

Author: aputhenc

data-platform/modernise/transportable-tablespace/README.MD

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+# Transportable Tablespace
+ 
+Transportable tablespace is an Oracle Database feature which helps to migrate either partial or full database from one database to another.
+
+Transportable tablespaces are usually the fastest fast way to move user and application data between databases, because tablespace data files are moved en masse from the source database to the target.
+ 
+# Table of Contents
+ 
+1. [Useful Links](#useful-links)
+ 
+
+## Useful Links
+
+- [Transportable Tablespace Basics](https://youtu.be/jte-W_6tJME)
+- [Transportable Tablespace Checklist](https://youtu.be/PhktQqOlNXE)
+- [Migrate Big Endian Database to OCI using Transportable Tablespace ](https://youtu.be/dyDefQxSesI)
+
+
+# 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/folder-structure/LICENSE) for more details.