add video tutorials

Author: djpmsft

articles/data-factory/TOC.yml

@@ -84,6 +84,8 @@
     items:
     - name: Transform data with a mapping data flow
       href: tutorial-data-flow.md
+    - name: Mapping data flow video tutorials
+      href: data-flow-tutorials.md
     - name: Prepare data with a wrangling data flow
       href: wrangling-data-flow-tutorial.md
   - name: External transformations

articles/data-factory/data-flow-tutorials.md

@@ -0,0 +1,121 @@
+---
+title: Mapping data flow video tutorials
+description: A list of video tutorials explaining mapping data flow concepts
+author: djpmsft
+ms.author: daperlov
+ms.service: data-factory
+ms.topic: tutorial
+ms.date: 01/06/2020
+---
+
+# Mapping data flow video tutorials
+
+Below is a list of mapping data flow tutorial videos created by the Azure Data Factory team.
+
+As updates are constantly made to the product, some features have added or different functionality in the current Azure Data Factory user experience.
+
+## Getting Started
+
+[Getting started with mapping data flows in Azure Data Factory](http://youtu.be/MFw7t_8tuV4)
+
+## Debugging and developing mapping data flows
+
+[Debugging and testing mapping data flows](https://www.youtube.com/watch?v=3ANxyvDGfjA).
+
+[Data exploration](https://www.youtube.com/watch?v=En1ztyh5GaA)
+
+[Data preview quick actions](https://www.youtube.com/watch?v=CP0TnNmaLA0)
+
+[Monitor and manage mapping data flow performance](https://www.youtube.com/watch?v=fktIWdJiqTk)
+
+## Transformation overviews
+
+[Aggregate transformation](http://youtu.be/jdL75xIr98I)
+
+[Alter row transformation](https://www.youtube.com/watch?v=4ktoohwptmQ)
+
+[Derived Column transformation](https://www.youtube.com/watch?v=FFCbU4ujCiY)
+
+[Join transformation](https://www.youtube.com/watch?v=zukwayEXRtg)
+
+[Lookup transformation](https://www.youtube.com/watch?v=9U-0VPU2ZPU)
+
+[Pivot transformation](https://www.youtube.com/watch?v=Tua14ZQA3F8&t=34s)
+
+[Select transformation](http://youtu.be/F9VjQ_YyRyU?hd=1)
+
+[Select transformation: Rule-based mapping](https://youtu.be/5lf1lh1qMwU)
+
+[Surrogate key transformation](https://www.youtube.com/watch?v=ISpegL9CbTM)
+
+[Union transformation](http://youtu.be/_Et6mg1tEr8?hd=1)
+
+[Unpivot transformation](http://youtu.be/KFYkxcpB8b0?hd=1)
+
+[Window Transformation](https://www.youtube.com/watch?v=m6zgbtY5AYQ)
+
+## Source and sink
+
+[Reading and writing JSONs](https://www.youtube.com/watch?v=yY5aB7Kdhjg)
+
+[Parquet and delimited text files](https://youtu.be/V_2a60j2Kjo)
+
+[CosmosDB connector](http://youtu.be/plp1etT2ftY?hd=1)
+
+[Infer data types in delimited text files](https://www.youtube.com/watch?v=nJjRzlFktlA)
+
+[Reading and writing partitioned files](https://www.youtube.com/watch?v=7Q-db4Qgc4M)
+
+[Transform and create multiple SQL tables](https://www.youtube.com/watch?v=Sj15Yjwai1A)
+
+[Partition your files in the data lake](https://youtu.be/VNWv-MvLQ_0)
+
+[Data warehouse loading pattern](https://www.youtube.com/watch?v=7mLqwtmeQFg)
+
+## Schema drift
+
+For more information, see [Schema drift in mapping data flow](concepts-data-flow-schema-drift.md).
+
+[Drifted Columns using Pivot](https://youtu.be/5MygzCX0wnM)
+
+## Optimizing mapping data flows
+
+[Data lineage](https://www.youtube.com/watch?v=5KvqYF-y93s)
+
+[Optimization tips](https://www.youtube.com/watch?v=a2KtwUJngHo)
+
+[Iterate files with parameters](http://youtu.be/uEgz0ptYRDM?hd=1)
+
+[Decrease start-up times](https://youtu.be/FFCbU4ujCiY?t=528)
+
+[SQL DB performance](https://youtu.be/iyZT5CY3V_4)
+
+## Mapping data flow scenarios
+
+[Fuzzy lookups](http://youtu.be/7gdwExjHBbw)
+
+[Staging data pattern](https://youtu.be/mZLKdyoL3Mo)
+
+[Clean addresses pattern](https://youtu.be/axEYbuU3lmw)
+
+[Deduplication](https://www.youtube.com/watch?v=OLenvYwg__I)
+
+[Merge F\files](http://youtu.be/WbDTBAyYte8)
+
+[Slowly changing dimensions type 1: overwrite](http://youtu.be/Rz2zx5GRbrA)
+
+[Slowly changing dimensions type 2: history](http://youtu.be/123CptslKvU)
+
+[Fact table loading](http://youtu.be/ABG3X9pgFPQ)
+
+[Transform SQL Server on-prem with delta data loading pattern](https://youtu.be/IN-4v0e7UIs)
+
+[Parameterization](https://www.youtube.com/watch?v=vpuuQcFojt8)
+
+[Distinct row & row counts](https://youtu.be/ryYo8UFUgTI)
+
+[Handling truncation errors](http://youtu.be/sPpcSiKQz34)
+
+[Intelligent data routing](https://youtu.be/PIGw-Z-0upw)
+
+[Data masking for sensitive data](https://www.youtube.com/watch?v=OFd4LeiTmfs)