Update/revise/move/remove "How queries work" section

[AskYous]

If you can given an example execution happening from C# to the database back to C#, that would be nice. Because even though I read this, I don't know what it means to cache as mentioned in 1a. If I ran Author.Books.ToList() twice, do two executions run or not? An example may have answered this for me.

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Document Details

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• ID: 3208b215-1bac-c110-12f4-e1a6b448fdaf
• Version Independent ID: 3f6fb56f-0a79-8861-f8c4-ea5969a9aff5
• Content: How Queries Work - EF Core
• Content Source: entity-framework/core/querying/overview.md
• Product: entity-framework
• Technology: entity-framework-core
• GitHub Login: @rowanmiller
• Microsoft Alias: divega

[divega]

Triage: Clarify that what we mean here is that the result of query compilation is cached. The results are also added to the DbContext (if the query is tracked) but the second query will execute against the database.

Also mention compiled query and relational SQL command caching.

[ajcvickers]

See also comment in #1783

[ajcvickers]

Note from team meeting:

• Move internal specifics of query to the internals/architecture docs (Document EF Core architecture and internal technical details #1920)
• User-perspectives should be covered where appropriate in other docs
• May need a simple, high-level introduction to LINQ