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I think maybe I misunderstood what they said. I havent started the project yet but they told me data mapping and I’ll be using a lot of SQL. I thought that meant using SQL to data map
So you might create data maps through a data governance tool or even simply through excel
They prob said you’d use SQL to create test cases and perform validation
Data Mapping is data management mostly. Just do all those concepts
Hm not sure I understand why you’re doing data mapping in SQL, as SQL is simply a language to query information from.
Are you being asked to use SQL-like logic to create a data model? Or use a specific tool like Snowflake or SQL Server to support governance? Or something else?
I’ve done especially the former, but requires partnership with key stakeholders plus relevant IT teams to do it, and can require multiple iterations/refinements as you do more discovery and determine test cases.
I did not get the question either. Are you just trying to look if you have all the tables, columns and data available by executing queries and verifying schema?
They might have asked to dig into SQL code and prepare source to destination data lineage.
You’re talking about metadata. Don’t think you could do that with SQL. You could analyze a log file and understand how the data is being used? And maybe visualize it? It’s difficult to do without a data lineage tool.