CREATE TABLE [dbo].[ExchangeSymbols] (
    [Symbol]      VARCHAR (30) NOT NULL,
    [ExchangeId]  SMALLINT     NOT NULL,
    [SymbolAlias] VARCHAR (30) NULL,
    CONSTRAINT [PK_ExchangeSymbols] PRIMARY KEY CLUSTERED ([Symbol] ASC, [ExchangeId] ASC),
    CONSTRAINT [FK_ExchangeSymbols_ExchangeSymbols] FOREIGN KEY ([ExchangeId]) REFERENCES [dbo].[Exchanges] ([ExchangeId])
);