adding info related to oss unity catalog to the docs

website/docs/unity-catalog.md

@@ -4,9 +4,9 @@ title: "Unity Catalog"
 ---
 
 # Syncing to Unity Catalog
-This document walks through the steps to register an Apache XTable™ (Incubating) synced Delta table in Unity Catalog on Databricks.
+This document walks through the steps to register an Apache XTable™ (Incubating) synced Delta table in Unity Catalog on Databricks and open-source Unity Catalog.
 
-## Pre-requisites
+## Pre-requisites (for Databricks Unity Catalog)
 1. Source table(s) (Hudi/Iceberg) already written to external storage locations like S3/GCS/ADLS.
    If you don't have a source table written in S3/GCS/ADLS,
    you can follow the steps in [this](/docs/hms) tutorial to set it up.
@@ -19,6 +19,12 @@ This document walks through the steps to register an Apache XTable™ (Incubatin
 5. Clone the Apache XTable™ (Incubating) [repository](https://github.com/apache/incubator-xtable) and create the
    `xtable-utilities-0.1.0-SNAPSHOT-bundled.jar` by following the steps on the [Installation page](/docs/setup)
 
+## Pre-requisites (for open-source Unity Catalog)
+1. Source table(s) (Hudi/Iceberg) already written to external storage locations like S3/GCS/ADLS or local.
+   In this guide, we will use the local file system. 
+   But for S3/GCS/ADLS, you must add additional properties related to the respective cloud object storage system you're working with as mentioned [here](https://github.com/unitycatalog/unitycatalog/blob/main/docs/server.md)
+2. Clone the Unity Catalog repository from [here](https://github.com/unitycatalog/unitycatalog) and build the project by following the steps outlined [here](https://github.com/unitycatalog/unitycatalog?tab=readme-ov-file#prerequisites)
+
 ## Steps
 ### Running sync
 Create `my_config.yaml` in the cloned Apache XTable™ (Incubating) directory.
@@ -50,8 +56,8 @@ At this point, if you check your bucket path, you will be able to see `_delta_lo
 00000000000000000000.json which contains the logs that helps query engines to interpret the source table as a Delta table.
 :::
 
-### Register the target table in Unity Catalog 
-In your Databricks workspace, under SQL editor, run the following queries.
+### Register the target table in Databricks Unity Catalog
+(After making sure you complete the pre-requisites mentioned for Databricks Unity Catalog above) In your Databricks workspace, under SQL editor, run the following queries.
 
 ```sql md title="SQL"
 CREATE CATALOG xtable;
@@ -75,8 +81,24 @@ You can now see the created delta table in **Unity Catalog** under **Catalog** a
 SELECT * FROM xtable.synced_delta_schema.<table_name>;
 ```
 
+### Register the target table in open-source Unity Catalog using the CLI
+(After making sure you complete the pre-requisites mentioned for open-source Unity Catalog above) In your terminal start the UC server by following the steps outlined [here](https://github.com/unitycatalog/unitycatalog/tree/main?tab=readme-ov-file#quickstart---hello-uc)
+
+In a different terminal, run the following commands to register the target table in Unity Catalog.
+
+```shell md title="shell"
+bin/uc table create --full_name unity.default.people --columns "id INT, name STRING, age INT, city STRING, create_ts STRING" --storage_location /tmp/delta-dataset/people
+```
+
+### Validating the results
+You can now read the table registered in Unity Catalog using the below command.
+
+```shell md title="shell"
+bin/uc table read --full_name unity.default.people
+```
+
 ## Conclusion
 In this guide we saw how to,
 1. sync a source table to create metadata for the desired target table formats using Apache XTable™ (Incubating)
-2. catalog the data in Delta format in Unity Catalog on Databricks
-3. query the Delta table using Databricks SQL editor
+2. catalog the data in Delta format in Unity Catalog on Databricks, and also open-source Unity Catalog
+3. query the Delta table using Databricks SQL editor, and open-source Unity Catalog CLI.