Ganymede Table Structure

erDiagram    Message {        string messageId PK "Primary Key"        string writerId "Sign In With Apple UUID"        int allowedReaderCount "Recipient Count"        string key "Encryption Key"        datetime createdAt "Default: now()"    }    Read {        string readId PK "Primary Key"        string readerId "Sign In With Apple UUID"        string messageId FK "Foreign Key"        datetime createdAt "Default: now()"    }
    Message ||--o{ Read : "has many"    Read }|--|| Message : "belongs to"