Create README.md for database search

Author: uschwinn

data-platform/core-converged-db/database-23c/database-search/README.md

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+# Database Search
+
+Oracle Text is a full-text search that is fully integrated into Oracle Database and delivered as a part of all versions of Oracle Database. It uses standard SQL to index, search, and analyze text and documents in different stored in the Oracle database, in files, and on the web. 
+Oracle Text can perform linguistic analysis on documents, mining capabilities, classification, clustering, etc.
+
+In 23 Ubiquitous Database Search helps in cases where you need to search in different data sources. Only one command is needed to create a self managed index and another one to add different sources. Without writing additional PL/SQL code you can include different table data sources in your search. A new simple PL/SQL interface called DBMS_SEARCH to creates an index across multiple objects, easily add data sources (specific tables or views) into the index or also remove them. This strongly simplifies indexing tasks. 
+For example it is not necessary to define complex USER_DATASTORE procedures. In addition the synchronization of the index will be maintained automatically.
+
+## Useful Links
+
+### Documentation  
+ 
+- [Text Application Developer's Guide 19c](https://docs.oracle.com/en/database/oracle/oracle-database/19/ccapp/index.html)
+- [Geting Started with Oracle Text](https://docs.oracle.com/en/database/oracle/oracle-database/19/ccapp/getting-started-with-oracle-text.html#GUID-D954F00B-1019-475A-ACD6-82E32DE8773B)
+- [Text Reference 19c](https://docs.oracle.com/en/database/oracle/oracle-database/19/ccref/index.html)
+- [Text Application Developer's Guide 23c](https://docs.oracle.com/en/database/oracle/oracle-database/23/ccapp/index.html)
+- [Text Reference 23c](https://docs.oracle.com/en/database/oracle/oracle-database/23/ccref/index.html)
+
+### Blogs
+
+- [Indexing Text in Object Storage](https://blogs.oracle.com/datawarehousing/post/indexing-text-object-storage)
+- [Using JSON documents and don’t know what you’re looking for? 23c Search Indexes to the rescue](https://blogs.oracle.com/database/post/23c-search-index)
+- [New full-text search in 23c: Ubiquitous Database Search](https://blogs.oracle.com/coretec/post/ubiquitous-database-search-in-23c)
+  
+### Team Publications
+
+- [New full-text search in 23c: Ubiquitous Database Search](https://blogs.oracle.com/coretec/post/ubiquitous-database-search-in-23c)
+
+### LiveLabs Workshops
+
+- [Full-Text Search in Oracle Database](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=3286&clear=RR,180&session=108664404207439)
+- [Index Files in the OCI Object Store with Oracle Text](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=3537&clear=RR,180&session=113661389345021)
+- [Low code development with Advanced textual analysis in ATP](https://apexapps.oracle.com/pls/apex/f?p=133:100:113661389345021::::SEARCH:Oracle+Text)
+- [Easy Text Search over Multiple Tables and Views with DBMS_SEARCH in 23c](https://apexapps.oracle.com/pls/apex/r/dbpm/livelabs/view-workshop?wid=3721&clear=RR,180&session=10138919379439)
+
+### Oracle Live SQL
+
+- [Oracle Text Quickstart Tutorial](https://livesql.oracle.com/apex/livesql/file/tutorial_IHF3DMUBR01852DBZFYKUZF3Q.html)
+- [all Oracle Text scripts from the Code Library](https://livesql.oracle.com/apex/f?p=590:49::::RP,49:P49_SEARCH:Oracle%20text)
+
+ # 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.