# 20260510151022_NormalizeAuthor

- File ID: file:13u663i:20260510151022-normalizeauthor-cs
- Path: NexusReader.Data/Migrations/20260510151022_NormalizeAuthor.cs
- Role: database-config
- Layer: data

## Purpose

EF Core migration that normalizes authors by replacing an Author string column on Ebooks with an Authors table and an AuthorId FK, and provides the inverse Down migration.

## Key Details

This migration normalizes author storage by introducing an Authors table and an AuthorId FK on Ebooks (non-nullable, default 0) and sets referential action to Restrict. Down reverses these changes and restores the Author string column with max length 255.

## Symbols

- NormalizeAuthor: EF Core migration that normalizes authors by replacing an Author string column on Ebooks with an Authors table and an AuthorId FK, and provides the inverse Down migration.
- Up(): Apply schema changes: remove Ebooks.Author string, add Ebooks.AuthorId int, create Authors table, create index and foreign key.
- Down(): Revert the Up changes: drop FK, drop Authors table, drop index and AuthorId column, and re-add Ebooks.Author string column.
- NormalizeAuthor: EF Core migration class that applies and reverts schema normalization for authors.

## Dependencies

- No resolved dependencies.

## Calls

- No resolved calls.

## Coverage

- Symbols: 4
- Executable symbols: 2
- Executable symbols with control flow: 2
- Grounded edges: 4
- Unresolved references: 0
- Control-flow fragments: 2
- Unresolved jumps: 0
- Unsupported constructs: 0
- Control-flow coverage: 100%
- Required diagrams: 2
- Generated diagrams: 2

## Control Flow Fragments

- Up: 7 nodes, 6 edges, 0 jumps, 0 unsupported constructs
- Down: 7 nodes, 6 edges, 0 jumps, 0 unsupported constructs

## Diagrams

### 20260510151022_NormalizeAuthor Neighborhood

```mermaid
flowchart LR
    class_1j6dl20_normalizeauthor("NormalizeAuthor")
    file_13u663i_20260510151022_normalizeauthor_cs("20260510151022_NormalizeAuthor")
    method_5tn4c6_up[["Up()"]]
    method_wcoxzi_down[["Down()"]]
    type_1p2z625_normalizeauthor[/"NormalizeAuthor"/]
```

### 20260510151022_NormalizeAuthor Execution Overview

```mermaid
flowchart TD
    class_1j6dl20_normalizeauthor("NormalizeAuthor")
    method_5tn4c6_up[["Up()"]]
    method_wcoxzi_down[["Down()"]]
    class_1j6dl20_normalizeauthor -->|contains| method_5tn4c6_up
    class_1j6dl20_normalizeauthor -->|contains| method_wcoxzi_down
```

## Diagram Validation

- Status: pass
