EF Npgsql Core not generating temporary Id on Insert

MVC EF Oracle: How do I use a sequence to generate the next ID on insert?

using Oracle, MVC 5, EF 6, and the database first. I'm attempting to have an object named Mission's ID generated automatically. Currently, a stored procedure in the database uses the insert command and the sequence MISSION SEQ to do this. Since I'm having difficulties getting this stored procedure to function, I decided to try handling it myself as...

EF Core set Id to Int.MinValue and try to insert in database

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Insert new entity with EF Core with a manually assigned Id

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EF core: cannot insert object with foreign key using ID properties (only navigation properties work)

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.net core C# use dynamic property name on EF Core Database first generated model class

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Temporary variables in LINQ select statements for EF Core

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Why doesn't EF Core automatically generate id field?

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"Cannot insert explicit value for identity column in table" when inserting object with EF Core

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Get list of Identity Ids inserted in EF Core

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EF Core 3 Scaffolding (Database first) does not generate Primary Key Fluent API

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